Skip to Content

US EPA Methods 600/4-79-020 - Groundwater and Wastewater Control Check Standards


US EPA Methods 600/4-79-020 - Groundwater and Wastewater Control Check Standards

CPI International brings you an advanced selection of standards for the purpose of precise and accurate performance of groundwater and wastewater control checking under the EPA Methods 600/4-79-020. Our Multi-Element Peak Performance™ Standards function as a daily control standard to check the accuracy and precision of your groundwater and wastewater sample analysis.

We also offer customized standard solutions for reduced workload and increased efficiency in laboratories. Our reference materials are available in 1mL ampules or two 0.6mL ampules to increase your shelf life at no additional cost.

A certificate of analysis and a material safety data sheet are shipped with every standard and the accuracy of single element standards is guaranteed to ±0.3% with at least 12 months of expiration from date of shipment.

For inquiries and assistance, you can reach us at 1 800-878-7654 (Customer Service Line), 707-525-5788 (California) or email Sales@CPIInternational.com.

Premium Quality
Standards Reduce
Reworks

Certified, Traceable,
Accountable

Lower Your
Cost Per Test
Custom Standards
Available @ Fast
Turnaround

Private Label Available
for Small Distributors

Predictable Cost with
Auto-Shipment

Late Order
Cutoff Time