Indicator. APHA, ASTM, EPA for Chloride above 100 mg/L. Refrigerate.

Meets requirements of both ISO 17025 and ISO 17034 Certified Reference Materials, made under the strictest standards for stability, homogeneity, and accuracy Tested to tolerances of ±0.5% Supported by detailed Certificate of Analysis including temperature variation values and stated…

ICP Standard, High Purty Elements manufactured in an ISO 9000 certified laboratory. Guaranteed to 0.3% tolerance.

APHA for Radium

ICP Standard, High Purty Elements manufactured in an ISO 9000 certified laboratory. Guaranteed to 0.3% tolerance.

Trace Element Grade Certified. Not for HPLC use.

APHA for Lead

ICP Standard, High Purty Elements manufactured in an ISO 9000 certified laboratory. Guaranteed to 0.3% tolerance.

Actual Concentration: 1,000ppm ± 3ppm NIST Traceable

ICP Standard, High Purty Elements manufactured in an ISO 9000 certified laboratory. Guaranteed to 0.3% tolerance.

APHA (1ml-0.1mg) Hg

Actual Concentration: 1,000ppm ± 3ppm NIST Traceable

Meets requirements of both ISO 17025 and ISO 17034 Certified Reference Materials, made under the strictest standards for stability, homogeneity, and accuracy Tested to tolerances of ±0.5% Supported by detailed Certificate of Analysis including temperature variation values and stated…

ICP Standard, High Purty Elements manufactured in an ISO 9000 certified laboratory. Guaranteed to 0.3% tolerance.

Meets requirements of both ISO 17025 and ISO 17034 Certified Reference Materials, made under the strictest standards for stability, homogeneity, and accuracy Tested to tolerances of 0.01 pH units Supported by detailed Certificate of Analysis including temperature variation values and stated…