If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
1.19812
Ammonium standard solution
traceable to SRM from NIST NH4Cl in H2O 1000 mg/l NH4 Certipur®
Synonyma:
NH₄ Standard Solution
O této položce
Quality Level
technique(s)
ion chromatography: suitable
pH
5.4 (20 °C in H2O)
density
0.99 g/cm3 at 20 °C
application(s)
environmental
food and beverages
format
single component solution
storage temp.
15-25°C
Analysis Note
Determination method: Argentometric titration.
The content of this solution was determined with silver nitrate standard solution (article number 1.09081) standardized against volumetric standard sodium chloride (article number 1.02406). The expanded measurement uncertainty is ± 0.4 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 999b (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard sodium chloride, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.
Other Notes
Legal Information
1 of 1
Tato položka | |||
|---|---|---|---|
| technique(s) ion chromatography: suitable | technique(s) photometry: suitable | technique(s) photometry: suitable | technique(s) photometry: suitable |
| application(s) environmental | application(s) agriculture | application(s) agriculture | application(s) agriculture |
| format single component solution | format - | format single component solution | format single component solution |
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| storage temp. 15-25°C | storage temp. 15-25°C | storage temp. 15-25°C | storage temp. 15-25°C |
| pH 5.4 (20 °C in H2O) | pH 4.7 ( in H2O) | pH - | pH - |
Still not finding the right product?
Explore all of our products under Ammonium standard solution
Skladovací třída
12 - Non Combustible Liquids
wgk
nwg
Seznamy omezení vyplývajících z předpisů
Seznamy omezení vyplývajících z předpisů jsou poskytovány zejména pro chemické produkty. Pro jiné než chemické produkty lze poskytovat pouze omezené informace. Žádný záznam znamená, že v seznamech není obsažena žádná ze součástí. Povinností uživatele je zajistit bezpečné a zákonné použití produktu.
12125-02-9
Osvědčení o analýze (COA)
Vyhledejte osvědčení Osvědčení o analýze (COA) zadáním čísla šarže/dávky těchto produktů. Čísla šarže a dávky lze nalézt na štítku produktu za slovy „Lot“ nebo „Batch“.
Již tento produkt vlastníte?
Dokumenty související s produkty, které jste v minulosti zakoupili, byly za účelem usnadnění shromážděny ve vaší Knihovně dokumentů.
Sortimentní položky
Complete wastewater testing solutions for every treatment stage with instruments, test kits, and standards to ensure compliant, reliable water analysis.
Globální číslo obchodní položky
| Skladová položka | GTIN |
|---|---|
| 1198120500 | 04022536180762 |
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
-