Matrix Blanks and Standardization Solutions
Hach Company Nicotinic Acid p-Toluenesulfonic Acid, 25 g
(Nicotinic Acid PTSA) Protein-TKN standard: 4.743% N, 29.64% crude protein. For checking accuracy and digestion recovery in Total Nitrogen and TKN determinations. 25 g bottle. See 2277800 for the complete set of three standards with increasing resistance to digestion.
Hach Company PhosVer 3 Phosphate Reagent Powder Pillows, 5 mL, pk/100
For phosphate (phosphorus) determination by the PhosVer 3 ascorbic acid method. Sample Size: 5 mL. For use with visual test kits. Pack of 100 powder pillows.
Hach Company Manganese Standard Solution, 10 mg/L as Mn (NIST), pk/20 - 2 mL PourRite Ampules
For accuracy checks in manganese determinations
Hach Company Sulfuric Acid Standard Solution, 0.100N, 100 mL MDB
Multi-purpose sulfuric acid standard solution
World Precision Instrument Nitrite Standard Solution, 1g/L (100mL)
- Potassium Nitrite in HPLC Grade Water
- Ready to use
- 100 ml
- May be Irritating to Skin, See SDS
U.S. Pharmacopeia Succinic Acid Melting Point Standard, 110-15-6, MFCD00002789, 1g
Molecular formula C4H6O4, Molecular weight 118.09, Melting point/freezing point 363.2 - 366.8 °F (184 - 186 °C), Initial boiling point 455 °F (235 °C), pH in aqueous solution 2.7 Solution: 0.1%
Sigma Aldrich Fine Chemicals Biosciences Punicalin (A + B mixture) phyproof(R) Reference Substance | 65995-64-4 | 10MG
Punicalin (A + B mixture) phyproof(R) Reference Substance | Purity: >=95.0% (HPLC) | Mol Wt: 782.53 | 65995-64-4 | 10MG
Malvern Panalytical Pullulan/Dextran Standrd Ls/Td
TDS-PUL-NB - Pullulan/Dextran Standards for Light Scattering/Triple Detection calibration. Narrow calibration standard + Broad verification standard (6 sets = 12 Vials)
Perkin Elmer US LLC Internal Standard Stock Solution 125mL
Standard includes: 50 mg/L Sc, Ge 10 mg/L Rh, In, Tb Matrix: 2% HN03
Hach Company Copper Standard Solution, 100 mg/L as Cu (NIST), 100 mL
For accuracy checks in copper determinations.