pH Standards
SIAL/NIST191D - NIST® SRM® 191d, set of 191d-I + 191d-II
Product Type: Chemical
| application(s) | general analytical |
| form | powder |
| manufacturer/tradename | NIST® |
| packaging | pkg of 1 bottle x 25 g; 1 bottle x 30 g |
| Quality Level | 100  |
| General description: | This Standard Reference Material (SRM) is intended for use in preparing solutions for calibrating electrodes for pH measuring systems. SRM 191d consists of two components, each prepared to ensure high purity and uniformity:Sodium Bicarbonate, NaHCO3 (191d-I); and Sodium Carbonate, Na2CO3 (191d-II). However, neither SRM component is certified for purity of substance. A unit of SRM 191d consists of 25 g of sodium bicarbonate (191d-I) and 30 g of sodium carbonate (191d-II), each contained in its respective clear glass bottle. For more information, please refer to the COA and SDS. SRM 191D_cert  SRM 191D_SDS |
| Legal Information: | NIST is a registered trademark of National Institute of Standards and Technology |
| Legal Information: | SRM is a registered trademark of National Institute of Standards and Technology |
| Other Notes: | Please download a current certificate at nist.gov/SRM for current analytes and certified values. |
| Packaging: | 1 ea in bottle |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| UNSPSC | 41116107 |