ISO 17075-2:2017 pdf download

11-17-2020 comment

ISO 17075-2:2017 pdf free download.Leather — Chemical determination of chromium(VI) content in leather — Part 2: Chromatographic method.
ISO 17075-2:2017 specifies a method for determining chromium(VI) in solutions leached from leather under defined conditions. The method described is suitable to quantify the chromium(VI) content in leathers down to 3 mg/kg. ISO 17075-2:2017 is applicable to all leather types.
This first edition of ISO 17075-2, together with I$0 17075-1, cancels and replaces ISO 17075: 2007, which has been technically revised.
The main changes compared to IS0 17075: 2007 are as follows:
– the chromatographic analytical technique has been added;
– the sample preparation has been revised;
– mechanical shaking in Z,l and 7.2 has been revised;
A list of all parts in the ISO 17075 series can be found on the ISO website.
4 Principle
Extractable chromium(VI)is leached from the sample in phosphate buffer at pH 7, 0 to 8,0. An aliquot of the filtered extract is analysed for Cr(VI) using ion-exchange chromatography with UV-VIS detection.
5 Chemicals
All reagents used shall have at least analytical grade purity.
5.1 Extraction solution
Dissolve 22, 8 g dipotassium hydrogenphosphate K2HP04:3H20 in 1 000 ml water (5.7),adjusted to pH 8,0 +0, 1 with phosphoric acid (5.2).Degas this solution with either argon or nitrogen (5,6) or ultrasonic bath.

Download infomation Go to download
Note: If you can share this website on your Facebook,Twitter or others,I will share more.
BS EN ISO 4498:2010 pdf download BS Standards

BS EN ISO 4498:2010 pdf download

BS EN ISO 4498:2010 pdf free download.Sintered metal materials, excluding hardmetals — Determination of apparent hardness and microhardness. ISO 4498:2010 specifies methods of hardness testing of sintered metal materials, excluding hardmetals. Sintered metal materials generally have a...
Download Now
BS ISO 3632-2:2010 pdf download BS Standards

BS ISO 3632-2:2010 pdf download

BS ISO 3632-2:2010 pdf free download.Spices — Saffron (Crocus sativus L.) — Part 2: Test methods. ISO 3632-2:2010 specifies test methods for dried saffron obtained from the Crocus sativus L. flower. ISO 3632-2:2010 is applicable to saffron:...
Download Now
BS ISO 562:2010 pdf download BS Standards

BS ISO 562:2010 pdf download

BS ISO 562:2010 pdf free download. Hard coal and coke - Determination of volatile matter. In this International Standard the volatile matter is determined as the loss in mass, less that due to moisture, when coal or...
Download Now

LEAVE A REPLY

Anonymous netizen Fill in information