Science topics: ISO
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Questions related to ISO
I've seen a research article that tested a polymer sandwich structure in 3-point bending according to ASTM C393. Their testing parameters included a 100 mm span length, a 2.0 mm/min loading rate, and specimen dimensions of 150 mm length, 18 mm thickness, and 32 mm width. Can I use these same dimensions for my own samples?. Or is there any rule to find the specimen dimensions?
Dear colleagues,
When selecting dental materials for clinical use, common criteria such as the presence of a Safety Data Sheet (SDS) and certifications like CE (European Conformity) and FDA (U.S. Food and Drug Administration) are often considered essential. However, I believe there might be additional factors worth discussing to ensure safety, quality, and optimal clinical performance.
In your opinion, what other criteria should be considered when choosing dental materials for patients? Have you encountered materials that, despite having necessary certifications, did not perform well in clinical settings?
Some additional factors I propose include:
Biocompatibility: Ensuring no allergic or inflammatory reactions in oral tissues.
Clinical performance and durability: Resistance to wear, discoloration, and thermal expansion in the oral environment.
Absence of harmful substances: For instance, materials free from Bisphenol A (BPA).
Compatibility: With other materials or systems used in dentistry.
Scientific evidence: Backed by peer-reviewed studies and long-term clinical trials.
I am keen to hear your experiences, insights, and any relevant literature or research findings you could share.
Hi everyone,
I have a question regarding the appropriate standard to use when validating or critically reviewing a carbon footprint conducted according to ISO 14067. If we need to ensure compliance, which standard should apply?
- ISO 14071 (critical review for LCAs)?
- ISO 14064-3 (verification of GHG statements)?
Any insights or experiences would be greatly appreciated!
Best regards,
Fernando
I'm hoping to see some real world analysis on how I can apply the algorithms mentioned in this standard.
The question is under the course:
Laboratory Quality systems
Greetings.
In the context of the new ISO 14068 on Carbon Neutrality, how is double-counting of emissions between two subjects been dealt with?
Suppose Company B is assessing the carbon neutrality of its Organization. Company B acquires raw material from Company A, which provides transportation with property-owned vehicles. Company A reports transport emissions as direct emissions in its Scope 1 inventory (either ISO 14064-1 or GHG Protocol). Company B reports the same emissions in its Scope 3 inventory (indirect emissions - transport). Now, within the context of ISO 14064-1 this is not an issue, but I am wondering if this could be an issue related to double-counting when both companies are undergoing the assessment of Carbon Neutrality within the ISO 14068 scheme.
Thank you
I need this standard for my reserach
I want to characterize the mechanical properties of individual basalt fibers. I am having problems when choosing a test speed. If a follow ASTM C1557, I should choose a speed where the fiber fractures in less than 30 seconds. But if I follow ISO 5079:2020, my speed should be 50% gauge length per minute for specimens with a mean elongation at break lower than 8% (as is the case for basalt fibers). In this case, for a gauge length of 20mm, I would use 10 mm/min speed, which will break the fiber in less than 3 seconds.
Could you advice me in which speed to choose, please? Thanks in advance!
I am in the process of setting up a method for determination nitroso diethanolamine in shampoo. This method is performed using derivatization and post-column with HPLC device and UV detector. I use a 15 cm - C18 column. The mobile phase of the method is ammonium acetate buffer with pH 6.7. My method is according to ISO 10130 . Nitrosamines: Detection and determination of N-nitrosodiethanolamine (NDELA) in cosmetics by HPLC, post-column photolysis and derivatization) The permissible limit of nitrosoethanolamine in shampoo is 5 ppb, but the LOQ my method is currently 20 ppb. The shape of the peaks becomes very wide, so at low levels the peak looks like the baseline. How can I reduce the width of the peaks so that I can have sharper peaks? Thankful
Hello everyone,
We have a water treatment unit where the input water is TAP WATER. Tap water pass throw three steps in this order:
Softner ==> Filters (cotton filter+charcoal filter) ==> Reverse Osmosis
We are using water after reverse osmosis.
My question is what are the conductivity, pH and hardness limit and acceptable values of the tap water, water after softner, water after softner+filters and water after the three steps.
If you could provide references and/or standard I will be very grateful.
Thank you for your precious time.
Explain ISO 45001 in relation to safety and healthy management systems in the organization? with intext referencing
Q1: Are the GSCM, circular economy and I5.0 is operational practices or managerial practices in an industry?
Q2: Does ISO and OSHA guidelines fall under environmental conservation act/rules?
Thanks in advance
Dear researchgatiste,
I need this standard ISO 11352:2012 Water quality
if anyone can help me i need a update version?
Myself Nekin Joshua R. I like to do Fatigue compression test on 3D printed Polymer based Structure.
What is the ASTM Standard for Fatigue Compression test on 3D printed Polymer based Honeycomb structure?
What is the Specimen Size?
I have been searching for ASTM/ISO standard procedure to determine the tensile properties of shape memory filament used for 3D printing. I have come across ASTM D638 but this procedure uses 3D printed dog bone specimen. I want to test the filament as it is. Another standard is ISO 23523-2021, but it is used for fiber-reinforced cementitious composites (FRCCs), but PLA/TPU does not come under the umbrella of FRCC. Any expert opinion is highly appreciated. Thank you.
The question of transliteration (transcription) from Ukrainian Cyrillic to Latin in scientific texts is something that each Ukrainian researcher faced in his life. However, I could not find a perfect solution, so I am asking for your opinion.
Previously, for the transliterations of Ukrainian texts, I used transliteration rules from 27.01.2010 (http://ukrlit.org/transliteratsiia), which are known in Ukraine but not always understandable for foreigners. E.g. my previous surname was also transliterated using this standard (Дарія Ширяєва -> Dariia Shyriaieva, and to be honest, I do not know any foreigner who can read my name correctly using this official transliteration, especially the four vowels in the line "iaie"...)
So, it was not an ideal option, but I was used to it, and it is an accepted transliteration. That's why I defended this transliteration in my discussions with others.
However, I see that many people follow the ISO 9 standard (https://en.wikipedia.org/wiki/ISO_9) as an international standard, which also seems not ideal to me (at least the last version). Also, recently I found the mention of a new transliteration standard (quite a strange one!): "DSTU 9112:2021. Cyrillic-Latin transliteration and Latin-Cyrillic retransliteration of Ukrainian texts. Writing rules" (https://uk.wikipedia.org/wiki/%D0%94%D0%A1%D0%A2%D0%A3_9112:2021).
Could you please explain how you transliterate Ukrainian texts, which standard you use and why?
Thank you very much!
Dariia
Hi! I want to discuss about is there the bioplastic standard value for its mechanical properties like tensile, modulus and elongation. I dont mean that the standart test like ASTM D638, but the mechanical value that gonna be the standard value. Other than SNI please, I need to search in ASTM, ISO, EN, or other. Your help is appreciate.
Dear colleagues! I ask you for help! I deal with determination of hydroxyl value of organic mixture, which also compries up to 25 % mass. of water. I don't understand, how it can affect results of titration?
I do that in that way: boil both weighted sample and blank with 25 ml of phtalic anhydride solution in pyridine, than titrate them with standardized KOH water solution.
In any ASTM or ISO standards it says there must be not much water in phtalation agent (to prevent hydrolysis of phtalic anhydride to less reactive acid, as I see that). But there are nowhere notes about acceptable water content of sample. Does water have its own HV? Should I remove water from sample by vaccuum distillation before HV determination?
I appreciate you for any answer!
I found a set of ISO standards for electronic document management, and I'm looking for the most relevant to long-term digital preservation.
Can anyone provide ASTM E1007-90? For measuring concrete thermal property ASTM E1007 or ISO 10534-2-90 can be used?
Hi, I want to do tensile analysis for my vulcanized rubber sample following the ASTM 412/ ISO 37. My starting rubber was ENR latex. As stated in that standard type 1, the standard thickness should be 2.0mm plus minus 0.2 mm. However, when I vulcanize the prepared sample around that thickness in drying oven, it resulted bubbles formed on the surface of the rubber film. this problem restricted me to proceed with tensile analysis as the sample will easily rupture for tensile and give me inaccuracy result. the problem is lessen when I reduce the thickness of the film to around 1.5mm. I am thinking to reduce the thickness, however, it will not following the standard thickness. Is it possible for me to do that with the above limitation? What is the condition/pre-requirement to reduce the thickness not following the standard (just for thickness part, other following the standard). I found some of papers that did tensile testing on vulcanized rubber sometimes not followed the standard thickness, but I do not know the reason behind that allowing to reduce thickness.
Any suggestion for me to solve this problem. Im really appreciate. Thank you.
I need to abbreviate journal title (in reference section) as per ISO 4 (Rules for the abbreviation of title words and titles of publications). Can anybody share ISO 4, please?
Hi there,
There is an internal gene in plant to diagnose of which ISO has a protocol, primer, and a temperature program. I have ordered this universal primer twice and checked annealing from 52-59. I just saw the same size non-specific band( far larger than the target) in both PC and NTC in each temperature 54-59. The results remain the same whatever I have changed, such as primer or DNA concentration, or master mix.
I am working on a security measurement framework for open source ERP software. I would like to get expert opinion on the factors that affect security attributes as defined in ISO/IEC 25010
In an attempt to modernise the security control framework, the new version of ISO 27002:2022 is out. I wondered if anyone had looked remarkably at the latest version to determine the level of modernising that might have been in implementation.
I’m interested in views of the new format and structure, whether it achieves its aims of modernising the security control framework to meet the challenges of modern architectures?
According to ISO 11930:2019(en) Cosmetics — Microbiology — Evaluation of the antimicrobial protection of a cosmetic product, the process to obtain a work culture is as follows: Attain a stock culture by unfreezing previously cryopreserved microorganisms; From this stock culture perform a subculture and incubate 18 to 24h; From the fist, subculture perform a second subculture and incubate.
The cryopreserved microorganisms are bought and therefore assumed to be pure cultures, so one would assume the sequential cultures aren't to isolate the pretended microorganism. Why according to ISO 11930:2019(en) can we only use the second and third cultures?
what is the form of citation of reference method ISO, AFRNOR in journal bibliography?
I need method for broth micro dilution assay for AST testing (ISO 20776-1:2019) It would be great if anyone could share a PDF Thanks :) ?
Hi,
I have tried several times to run WB with my protein lysate from heart tissue. My lysis buffer is 1XRIPA +1X of proteinase inhibitor and phosphatase inhibitor cocktails and the samples are always on ice. My samples buffer + adding reduced reagent as DTT before loading on the SDS 4-20% gel. I tried to detect my phosphorylated protein as phospho_phospholamban (Ser16), I got signals but the problem is I got also strong signal in my control samples (from sham mouse ) without any stimulation like ISO or other reagents. Sometime my control samples showing as strong signal as my stimulated samples therefore it is very hard to say the stimulated samples is actually stimulated or not. So I just wonder that do you have any idea why my control samples gave strong signal (band) even I added phosphatase inhibitor? Is it because low amount I did add ? Thanks for help!!
We have succeeded to etch only one Ni alloy, with Aqua regia.
I am reading ISO 19036 at point 7.2, which addresses counting uncertainty. For the calculation of the distributional standard uncertainty of a Poisson distribution is indicated the formula:
u_poisson = (1 / Ln10) / sqrt (EC),
being EC the number of counting colonies.
On the other hand, the variance of a Poisson distribution is equal to its mean value, therefore, the standard deviation should be its square root.
I understand that the units above correspond to a log10, but still the basic calculations give me very different values.
Can someone explain to me where the equation of the iso 19036 for u_poisson comes from?
Does anyone have an article in which the latest ISO guide 35 version has been used and can you send it to me? I need to review that rule urgently.
We have rated the lignin contents in the lignocellulosic materials using Kappa number (mL volume of 0.02 N potassium permanganate solution consumed per 1 gram dry mass of lignocellulosic materials under the specified conditions) according to ISO 302-2015. Could you recommend any other methods which perform more effectively or easily?
I am trying to develop a simple method for amateurs to make relative measurements of noise in digital cameras. One method involves taking multiple images of a standard grey card, bringing the images into Photoshop as a stack and then using Photoshop's standard deviation function. As expected, the mean value of the standard deviation over the image increases with ISO setting. However, there is also a distinct spatial pattern to the standard deviation visible at all ISO settings. (See example image attached.) Changing lenses or just adjusting focus changes the pattern. No corresponding pattern is observed when calcuting mean or median.
My experiments were conducted on a copy stand using a Canon 5D Mark II DSLR and a Kodak grey card. The attached image is the pattern when the card is in focus. The contrast has been enhanced to make the pattern clearer. The standard deviation was calculate from 10 images taken in rapid sequence under close to identical conditions.

Hi Everyone,
How can I download certain ISO documents (full version) for free? It would be helpful for my research.
I am after ISO 14040, 14044, 14067, and ISO 13065.
Thanks
Dear Colleague,
Part of my Ph.D. thesis needs to be completed questionnaire, which, unfortunately, due to Covid 19, we cannot attend the company under review. For this reason, I request supply chain experts who wish to complete the questionnaire to notify me, that I will email the questionnaire to them. It would be your generosity to respond to the questionnaires and also distribute them among your colleagues, students, and networks.
Thank you in advance for your help and cooperation.
Hello,
Recently I've been looking for a strict guidelines considering the stability of chromatographic mobile phases. Found none, only some hints, good practice clues or SOP's from different labs all based on "scientific judgment". It is great for RnD, but not enough for GMP/ISO.
I bet many people here already dig this topic inside out. Can anyone direct me towards clear guidelines or possibly share the methods of testing the stability of the different mobile phases (besides pH checking) that she/he uses?
Any "hard facts" would be greatly appreciated especially for those working with routine and GMP analyses, and before audit :)
Cheers!
Natalia
📷
I am also looking for ISO 14000 series of standards. If you have others as well, it will be more than enough.
I am trying to simulate Random Road Profile Grade-C as per ISO 8608 using Shaping Filter Method equation (Eq. 15 of attachement).
The value of "Alpha" is taken as 0.127 from Table.3 shown in attached image, "Velocity of vehicle, v = 20 m/s".
But as per Simulink Model (Fig.3) "Random Number Block" is used for generating "Zero Mean Gaussian White Noise". The Random Number block used for this requires 4 inputs i.e. "Mean", "Variance", "Initial SEED" and "Sample Time".
The "Mean" is taken as "0" , "Sample Time" is taken as Simulation fixed step time i.e. 0.001.
Now I have no clue what value will be used for "Variance" and "SEED"? for this white noise.
Will the "variance" be Square of "Sigma" from Table 3? or some thing else?

Hello, I am accrediting the acute toxicity assay with Daphnia magna ISO 6341; may you suggest how to express the measurement uncertainty with the confidence interval?
Thanks in advance.
ISO/TS 16976-3:2019 Respiratory protective devices — Human factors — Part 3: Physiological responses and limitations of oxygen and limitations of carbon dioxide in the breathing environment
Does anyone have this document to consult it?
I need it for a short work.
Thanks you
Hi,
does anybody know which are the differences between standard ISO 28540 and DIN 38407-39 for PAHs analysis in water samples? Eventually, is it available DIN 38407-39 in english?
Thanks
Martina
Dear all,
I would like to conduct scratch and linear reciprocating tribo-test on my magensium alloy, which has a plasma electrolytic oxide (PEO) layer of about 20 um and 10 - 20 um of Parylene coating on top of it. So it is a double layer system.
I made a research on ASTM standard tests for scratch and linear reciprocating tribo-test and I found ASTM C1624 - 05 for the first and ASTM G133 - 05 for the second. However, I am not sure if these standards are applicable to a double layer coatings as in my system.
Are there some specific standard tribological tests for multilayer coatings?
Thanks!
Suggestions and recommendations welcome. Any usage/protocol experience would also be helpful/appreciated.
Cheers
Hi,
I warping my plates with paper, later put them in the autoclave (use wet sterilization cycle) but still some plates are get wet after ends the cycle. How to get dry the petri dishes? and if i use a oven, exist a normalized method (OMS, NHS UK, ISO) for drying the plates with a laboratory glassware oven?
Regards
I am Currently Working on Measuring Various Mechanical Properties of Metalic Materials using Universal Testing Machine (UTM) at Various Temperatures. I know that for Testing at Ambient Conditions, ASTM E8/E8M is followed.
By Literature Review, I have Identified the Specimen Dimensions for My Experiments.
Due to Lack of Adequate Experimental Data, I am Unable to Identify the Specimen Dimensions with respect to ASTM E21 and ISO 15579 for Testing at Elevated and Low Temperatures respectively.
Since, These Standards are Quite Costly to be Purchased Individually, Should I take the Specimen Dimensions at Room Temperature for Experiments at Low and High Temperatures ?
Is there a Major Difference in the Dimensions presented by these Standards or Can I Complete the Analysis using My Assumptions ?
I am a PhD student, and the doctor asked to do a lecture on ISO 9000, 14000, 17000, 118000,22000 18091,27000 and I would like to prepare the lecture. Is it possible to help me with these specifications with thanks to you
Colleagues, I am currently working on a project in my Master's Degree in Documentation that deals with evaluation indicators of digital libraries
ISO 7218 states that in cases where the number of colonies obtained in the 1st dilution is 0, the result must be calculated and presented as <1 / V * d (eg: <1/1 * 10^ -1; <10 cfu / g). ISO 19036: 2019 states that in these cases the LOQ should be calculated as <1 / 1.1 * d (eg: <1 / 1.1 * 10^-1; <9.1 cfu / g). What is your opinion on the matter?
Research suggested that standards will make a notable contribution to GDP growth. However, productivity growth in the construction sector is among the lowest of all industries over the past years, according to McKinsey. Shall standardization bodies (e.g., ISO, IEC, ITU, CEN) start standards initiatives (TC, WG, etc.) specifically for construction robots and automation?
I am currently looking for ideas on how to go about this.
I am looking for data which consists of firm name and their adoption date of ISO 9000 and if they are exporting firms or not.
Hi, everyone.
Our lab is going to use ISO 12966-2 and 12966-4 and there is one moment in sample preparation (rapid transmethylation method under alkali-catalysed conditions) that I can't understand. It is about the addition of saturated sodium chloride solution after transmethylation reaction. Maybe I'm not so good in chemistry to understand the purpose of this action. So, can anyone please help me to get it?
Hello,
we are conducting cytotoxicity tests since over an year and aren't able to get a stable test. We are no in the validation phase but there are some effects we can't explain. Here is an overview how we conduct the test in compliance with DIN EN ISO 10993-5:
- Seeding 1 x 10^4 cells in a 96-well plate (except the outer wells) --> incubate for 24 h
- Adding medical device extracts (100%, 50%, 10%, 1%) and controls:
- positive control: 1% Triton X (P)
- negative control: cell media (N)
- blank (B): media that was shaken with cell culture media for 24 h at 37 °C in the same kind of container like the medical device was shaken (in compliance with DIN EN ISO 10993-12)
- Incubation for 24 h
- Discard the media and add 50 µl MTT solution (10 mg/ml) --> incubate for 2 h
- Discard and add 100 µl Isopropanol --> incubate for 30 min
- Read out with microplate reader
See the pictures below...the cells are all the time okay until extracts and controlls are added...So something must happen at this point. Sometimes the negative control dies randomly. Sometimes the blank dies. Sometimes only one extract dilution which makes no sense. Does anyone have an idea?
Many thanks!
There are various software quality models viz. McCall’s, Boehm’s, Dromey's, FURPS, ISO 9126. What are the problems using these standards in real practice? How these standards differ from each other? Is there any global or widely acceptable software quality standard? Please provide your valuable suggestions?
Medical guidelines, prescribing how to diagnose a disease and how to treat this can be very helpful. On the other side, if a physician is obliged to follow this to the letter, it can be a burden, limiting common sense.
The same holds for ISO15189, partly helpful for improving the quality of their output and partly a burden forcing clinical laboratories into a lot of work.
What is your opinion on the balance between benefit and burden?
Hello,
I would need to understand how equation 4 of the ISO 748:207 "Hydrometry — Measurement of liquid flow in open channels using current-meters or floats" is obtained or from which source it is derived from. The equation tries to parameterize the m (exponent of the power law equation) as:
m=Cver/√g∙((2√g)/(√g+C )+0.3)
Where
g is the acceleration due to gravity (m/s2);
Cver is Chezy's coefficient on a vertical (m0,5/s).
(you can see the attachment with the ISO equation and the attachment with the whole ISO document).
Any help would be greatly appreciated.
I'm researching the use of PMI data in a MBD model for use in manufacturing.
I wasn't able to find any information about how threads (e.g. M10) and the ISO system of Limits and Fits (e.g. 20 H5) are handled within STEP AP242. In most CAD systems these are handled very well within the 3D annotations of the native model but once you export them to STEP AP242 you lose a lot of information. This limits the automated use of PMI data when exchanging this data. So I'm wondering whether I'm missing something or whether this is lacking within the STEP AP242 definition or the way it is implemented.
Any help to help me understand this is very much appreciated.
What do you think about the importance and value-add of The ISO 14040 series standards, Life Cycle Assessment? In general and especially in petrochemical industry.
I just got a new PC which I started using and I'm having trouble with kali linux VM. Now this is weird because I have experience with kali before and I am using this PC to run other VMs. I got an an ISO fitted specifically for virtualbox (32 bit kali) which I found here:
Whenever I try running it on VirtualBox i get this error: "VT-x is disabled in the BIOS for all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED)."
I went into my BIOS settings (on ASUS motherboard, don't know the exact model but i could look it up real quick and provide it if necessary). I went under Advanced -> CPU Configurations and found Intel VT-x technology. It was greyed out and I couldn't change it but it said it was "Supported" already
I then went under Advanced Settings->System Agent Configuration Settings, and enabled the VT-d function.
Despite both apparently being enabled I am still getting the same problem and it is persisting.
My PC has no problem running a VirtualBox session with Ubuntu Server ISO so it's not an issue with virtualbox itself. This also seems to indicate VT-x is already enabled to begin with as virtualization tech is clearly supported on the PC.
thoughts?
The ISO 22301, Societal security — Business continuity management systems — Requirements, if there is some organizations have its compliance certificate, how can this be a value-added to those organizations.
The ISO 30401, Knowledge management systems —Requirements, if there is some organizations have its compliance certificate, how can this be a value-added to those organizations.
Could you please share your knowledge/experience about the relationship between STEP AP209 (ISO 10303: AP209) and CGNS:
- Does AP209 covers/supports CGNS 100%?
- Where can I read more about the relationship between AP209 and CGNS?
The AP209 web page (http://www.ap209.org/related-standards) quotes this only:
”
AP209 relates with the following standards:
CGNS (CFD General Notation System) is integrated with the STEP integrated resources
Engineering disciplines covered today by AP209 ed2 are:
Computational Fluid Dynamics (CFD), mainly based upon the CGNS standard;
”
Thanking you.
In estimating the texture distribution of asphalt mixtures, i have managed to use the discrete fourier transform on my idealized surface profile and obtained my spectral power density.
However the process of Transforming constant bandwidth spectral data to constant-percentage
bandwidth spectral data has proved challenging i would appreciate assistance in understanding and progressing from my current stage.
I have attached the excel sheet and an image of the formulas from ISO 13473-4
I am hoping to perform a simple 20 minute eeg read on subjects and convert that raw data to a metric to show which frequency each subject spends most time generating. Does anyone know of an app or software that does that very simply? I’m totally intimidated my matlab :(
thanks for any tips.
Dear RG researchers ,,,
Please for your kind help regarding Six Sigma projects & method approach in the prevention of occupational hazards accidents for fulfillment general known standard like ISO 45001.
I found 2 scientific papers
Six Sigma method approach in the prevention of occupational accidents on the solid waste collector in South Jakarta
Use Six Sigma Approach to Improve Healthcare Workers Safety
Thanks for advance
Greetings colleagues!
I really hope you could devote some of your time to the following:
We are now designing a new dental implant (Class III).
During preclinical stage in vitro and in vivo studies were done. We want to verify the implant by designing a clinical trial, but before that all preclinical studies must be done.
What studies must be included in preclinics to measure safety (technical, biocompatibility etc) by ISO standards? As we know ISO-10993(bio) and ISO-14801(tech) are widely used for dental implants.
May be you can suggest a better tactics to check safety of the medical device?
I want to know the standard procedure. For example, ISO 22196 is one of the standard guideline to test the antimicrobial activity of coatings, but it's on purchase document. Does any one know about it or any other suitable method?
Hi,
I would like to calibrate the energy scales of our XPS system, and would like to receive recommendations of suppliers that sell highly pure Ag, Au and Cu foils (thickness greater than 20 nm).
I already contacted NPL, and they can send me the supplies, however, I would appreciate to receive other suggestions.
Also, I know that ISO 15472 describes the procedure well, but are there any other procedure from which one can follow?
Thanks in advance.
Hello,
Currently in my project, I am making a hardware controller which can modify the incoming PWM signal and vary the EV A.C charging. To start of with, does anyone know which exact chapters of IEC 61851 standards to buy ? I find that there are many chapters. Basically this hardware will modify the incoming charging current from EVSE to EV according to our inputs. Any literature/material regarding this will be useful. Thanks
Regards,
Praveen
Medical Laboratories have assessments to ISO 15189 and there is also ISO 17025 for testing and calibration labs. Both involve a quality management professional system, staff competency and a laboratory director, standard operatory procedures, assay validation and verification for the intended purpose, third party internal quality control, external quality assessment and assurance, and so forth.
Through casual conversation at the Practical Surface Analysis (PSA) meeting this week in Japan, I have become aware that there is still confusion on the availability and accessibility to terms and definitions in surface chemical analysis. While the ASTM E42 vocabulary document, E673, was widely available through most research libraries in the annual volume of ASTM standards, keeping the document consistent with the ISO vocabulary standard for surface chemical analysis, 18115-1, was difficult, particularly since the ISO document was adopting many more terms and growing quickly. It was decided to withdraw the ASTM document and make normative reference to the ISO vocabulary document in ASTM standards.
As part of this change, several people (Don Baer at PNNL and Cedric Powell at NIST in particular) made great effort in getting ISO to agree to make these terms free and readily accessible. They were very successful in getting this cooperation, and now all of the surface analysis vocabulary terms are readily accessible through the IOS Online Browsing Platform (https://www.iso.org/obp/ui). Now there are several sites also hosting links to this, in order to make these terms and definitions accessible. This is a valuable resource, and is freel