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Catalog Number: (CAJT5626-2)
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
Description: Standardized at 25 °C against chemicals whose certification is traceable to NIST. Lot standardization value, accurate to ±1 part per 1000, provided on label.

Supplier: SPEX CERTIPREP LLC
Description: Ion chromatography and ion selective electrode standards.

Supplier: SPEX CERTIPREP LLC
Description: Ion chromatography and ion selective electrode standards.
Catalog Number: (RC8112-16)
Supplier: Ricca Chemical
Description: 1000ppm SO4.

Supplier: Ricca Chemical
Description: Certified reference material (CRM) for ion chromatography (IC)

SDS

Catalog Number: (RC8109-4)
Supplier: Ricca Chemical
Description: Sulfate Standard Stock Solution, 1000 ppm SO₄²⁻, Ricca Chemical Company

Supplier: MilliporeSigma
Catalog Number: (CA1.19813.0500)
Supplier: MilliporeSigma
Description: Traceable to SRM from NIST.

Catalog Number: (CA1.09872.0001)
Supplier: MilliporeSigma
Description: Cs50

Supplier: AVANTOR PERFORMANCE MATERIAL LLC
Description: AR—The standard Macron Fine Chemicals™ grade of analytical reagents; suitable for laboratory and general use. If the reagent also meets the requirements of the American Chemical Society Committee on Analytical Reagents, it will be denoted as an AR (ACS) reagent. 
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
Description: The USP/NF Offical Compendia of Standards contains a section titled, "Reagents, Indicators, and Solutions" that lists the quality requirements of chemicals to be used in compendia testing. PharmaTest reagents are tested according to these requirements, relieving you of the need to do additional testing on your reagents. Products may be reagent or other grade, but are labeled as "Meets reagent specifications for testing USP/NF monographs." Test solutions are labeled as PharmaTest.
Catalog Number: (RC811016)
Supplier: Ricca Chemical
Description: 1 mL = 0.1 mg SO4, 100 ppm SO4, (33.4 ppm S). (Na2SO4 in Water) Meets APHA, ASTM D 516 and EPA Specifications. Container: Plastic.

Catalog Number: (103010-740)
Supplier: Anaspec Inc
Description: Reference standard for measuring fluorescence quantum yield.


Supplier: Thermo Scientific Chemicals
Description: Molecular Formula: K2SO4 in H2O
Physical Form: Liquid
MDL No.: MFCD00145343
Catalog Number: (CA11028-044)
Supplier: Hach
Description: For accuracy checks in sulfate determinations.


Supplier: ERA
Description: Calibration Standard, Sulfate, ERA

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