ProCal Primary Turbidity Standards are pre-diluted, factory certified, and ready for use with not only the HF scientific turbidimeter product line but with other manufacturer’s instrumentation. The ProCal no formazin formulation utilizes a preservative that enhances stability, yet is safe and…

All standards are 1 pint (475mL) bottles, unless otherwise noted. 0732J61 Fluoride Standard Bulk Pack – includes 4 x 475 mL each of 1 ppm Fluoride standard premixed with TISAB II (4210F31) and 10 ppm Fluoride standard premixed with TISAB II (0732J60).

Storage Temperature: 2-8°C Other Notes: Bovine serum albumin in saline

Acidimetric standard. For the standardization of basic standard solutions and titrants

Volumetric standard, secondary reference material for alkalimetry, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. Ph Eur,Reag. USP CAS number: 877-24-7 EC number: 212-889-4 Grade: Reag. Ph Eur,Reag. USP Hill Formula: …

Concentration (as PO₄) 1,000 +/- 10 ug/ml Matrix: KH₂PO₄, water

Inorganic Ventures' pH 4 Standard is a certified reference material set in a water matrix for stability. This standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date . Size: various …

Inorganic Ventures' pH 2 Standard is a certified reference material set in a water matrix for stability. This standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date . Size: various …

Phenol Standard, 1000ppm (1mL = 1mg) CAS Number: 108-95-2 Shelf Life (Months): 24 Container: Amber Glass Traceable to NIST: Yes Compendia References: APHA 5530 C,D

Inorganic Ventures' 1000 ppm Propionate for IC is a certified reference material set in a water matrix for stability. This propionate standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date . Size:…

Inorganic Ventures' 1000 ppm Potassium for AA is a certified reference material set in a nitric acid matrix for stability. This potassium standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date . …

Inorganic Ventures' pH 9 Standard is a certified reference material set in a water matrix for stability. This standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date . Size: various …

Solubility: (20°C) soluble Density: 0.998 g/cm3 (20°C)

For surface finishing titrations

Matrix: H2O Min: >= 995 Max: =< 1005 ppm Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Standardization of Ferrous Sulfate, Sodium Thiosulfate

Synonyms Potassium hydrogen oxalate-oxalic acid-water (1/1/2) Hill Formula C₄H₃KO₈ * 2 H₂O HS Code 2917 11 00 EC number 204-874-6 Molar mass 254.20…

Minimum purity 97+%

Hill Formula C₈H₅KO₄ HS Code 2917 39 95 EC number 212-889-4 Molar mass 204.22 g/mol CAS number 877-24-7

UN No.: 1805 pH: 1 (H2O, 20°C) Solubility: (20°C) not applicable Density: 1.015 g/cm3 (20°C) Ignition Point: 1 (H2O, 20°C)

MDL No: MFCD00145108 Liquid, KH₂PO₄ in H₂O

1000 µg/mL Potassium in 1% HNO₃ This standard is traceable to NIST SRM 3141 and certified ISO Guide 34 and 17025. 18 Month Expiry Date

10,000 µg/mL Phosphorus from NH₄H₂PO₄ in 0.05% HNO3 This standard is traceable to NIST and certified ISO Guide 34 and 17025. 18 Month Expiry Date

Analysis Note: 1000 mg/L P in water, prepared with high purity H 3 PO 4 and water Trace SELECT ® Ultra. Legal Information: Trace SELECT is a registered trademark of Sigma-Aldrich Co. LLC