Buffers and Solutions

Ammonium Hydroxide, 10 Percent (w/v) NH3 Solution, (U.S.P. Test Solution) is a solution of ammonia in water. Aqueous ammonia, as it's otherwise known is used as a complexant and base in qualitative inorganic analysis. It becomes a deep blue color with copper solutions. Used to dissolve silver oxide residues, such as the ones formed from Tollens' reagent, it is also commonly used in numerous cleaning agents, such as window cleaning formulas as well as a complexant that is manufactured to parts-per-billion trace impurities and has been used in the semiconductor industry to dissolve heavy or precious metal components.

(1 per EA )

Shelf Life (months): 18, Traceable to NIST, UN Number: UN2924 (1 per EA)

Grams Iodine Solution acts as a mordant for Gram staining technique. It forms an insoluble crystal violet-iodine complex, which imparts purple color to the cells. (1 per EA )

Subtilisin A, Aqueous Solution, a protein-digesting enzyme, can be obtained from Bacillus subtilis and is used in synthetic organic chemistry for research; it can also be found in dishwashing detergents and some cosmetics. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.

(1 per EA)

Shelf Life (months): 24, Traceable to NIST, UN Number: (1 per EA)

Shelf Life (months): 24, , UN Number: UN1789 (1 per EA)

Hydrogen Sulfide Water, Solution can be used in the degradation of biopolymers. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.

(1 per EA )

Sulfuric Acid .6N, 32 oz (1 per EA)

Trace Hardness Reagent, 2 oz, Dropper Bottle (1 per EA)

Potassium Iodoplatinate TS, USP Test Solution is a ready-for-use solution for the purpose of conducting USP, National Formulary and assay tests and is prepared according to the specifications of the USP Pharmacopeial Convention.

(1 per EA )

Silver Nitrate TS - 500mL (1 per EA )

Iodide Solution, 16 oz (1 per EA)

Shelf Life (months): 12, , UN Number: (1 per EA)

Shelf Life (months): 24, Traceable to NIST, UN Number: (1 per EA)

Sodium Hydroxide, 0.5 N, 200.00 L Drum (1 per EA )

Shelf Life (months): 18, Traceable to NIST, UN Number: (1 per EA)

Sulfuric Acid, 0.02 N, 500.00 mL Poly natural (1 per EA )

Starch Indicator Solution, 2 oz, Dropper Bottle (1 per EA)

Buffer Solution, pH 1.68 +/- 0.02 @ 25 DEG C, Reference Standard is an inorganic solution in water. Spectrum solutions utilize the highest quality raw materials appropriate to your product. Most raw materials meet or exceed the specifications established by the American Chemical Society. Where appropriate, many finished products are traceable to NIST Standard Reference Materials. Manufacturing, quality control testing, and packaging are all performed in Spectrum's own facilities. Record keeping and sample retention of all produced lots ensure product consistency and complete traceability.

(1 per EA )

Sodium Chloride, 20% w/w Solution, 500 mL, Poly (1 per EA )

Sodium Silicate, 41° Baume, 200.00 L Drum (1 per EA )

Murexide Indicator, 0.2% w/w in Sodium Chloride, 100 g, Poly (1 per EA )

Shelf Life (months): 24, Traceable to NIST, UN Number: UN1824 (1 per EA)

Nitric Acid, 10% v/v Solution, 2.2 L (1 per EA)