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Buffers and Standards

Buffers and Standards

Hydrogen ion buffers comprising a mixture of a weak acid and its conjugate base or vice-versa and used to stabilize pH; also diluents, washing solutions, and standard-value solutions used for a broad array of scientific calibration purposes.

The buffers used to calibrate pH meters may be certified and/or traceable to the National Institute of Standards and Technology (NIST). These buffers may also be color-coded for easy identification:

  • Red: pH 4.0
  • Yellow: pH 7.0
  • Blue: pH 10.0

 

Chromatography Standards (83)
Viscosity Standards (43)
Matrix Blanks and Standardization Solutions (25)
Spectroscopy Standards (17)
Environmental Testing Standards (2)

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1 – 15 of 157 results
3

Synthetic Sea Water for ASTM 665 / IP 135, Paragon Scientific™

A high quality analytical reagent manufactured and certified compliant for use in ASTM D 665 / IP 135 the Standard Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water.

Certifications/Compliance ASTM 665 / IP 135
Shelf Life 12 Months
8

Saybolt (ASTM D6045, D156) Colour Reference Standard, Paragon Scientific™

Saybolt Colour Reference Standards are for routine calibration of colour measuring instruments and verification of test data. Process industries throughout the world use colorimeters for colour control of products such as edible and industrial oils, fuels, chemicals, pharmaceuticals, paints and coatings.

EDGE
Type Color Reference Standard
Quantity 500 mL
Certifications/Compliance Certified according to ISO 17025 / ISO 17034 under UKAS accreditation
11

CCS Viscosity Standard, ASTM D 5293 and SAE Specification J309, Paragon Scientific™

Paragon ISO 17025 / ISO 17034 certified CCS viscosity standards are for the calibration and verification of analytical equipment used in Cold Cranking Simulator (CCS) testing to ASTM D5293 and SAE Specification J300.

12

CCS Viscosity Standard, ASTM D 5293 and SAE Specification J317, Paragon Scientific™

Paragon ISO 17025 / ISO 17034 certified CCS viscosity standards are for the calibration and verification of analytical equipment used in Cold Cranking Simulator (CCS) testing to ASTM D5293 and SAE Specification J300.

13

CCS Viscosity Standard, ASTM D 5293 and SAE Specification J316, Paragon Scientific™

Paragon ISO 17025 / ISO 17034 certified CCS viscosity standards are for the calibration and verification of analytical equipment used in Cold Cranking Simulator (CCS) testing to ASTM D5293 and SAE Specification J300.

14

CCS Viscosity Standard, ASTM D 5293 and SAE Specification J303, Paragon Scientific™

Paragon ISO 17025 / ISO 17034 certified CCS viscosity standards are for the calibration and verification of analytical equipment used in Cold Cranking Simulator (CCS) testing to ASTM D5293 and SAE Specification J300.

15

CCS Viscosity Standard, ASTM D 5293 and SAE Specification J320, Paragon Scientific™

Paragon ISO 17025 / ISO 17034 certified CCS viscosity standards are for the calibration and verification of analytical equipment used in Cold Cranking Simulator (CCS) testing to ASTM D5293 and SAE Specification J300.