Page 188 - Catalog Instruments and Supplies

188 SCP SCIENCE
Standards Reagents and CRMs

Performance Evaluation Standards
pecheck

Designed for routine performance evaluation and control Features
charting, SCP SCIENCE peCHECK products are a
cost effective means of monitoring technician and equipment 20 ml vials. No pipetting necessary. Just dilute to volume.
variability and bias. These standards are available for minerals, Each standard dilutes to 1 L
nutrients, and solids in water / wastewater matrices and are ·· Eliminate a source of potential error, save time with single stop
certified through a comprehensive round-robin study providing
independent verification from multiple laboratories. preparation
Includes Certificate of Analysis, prepared in accordance with ISO Guides
31 and 35, providing Consensus values and Confidence and Tolerance
intervals for each method used in the certification.
·· Complete documentation for audit purposes
Prepared in large batches
·· Same lot number available time after time allows for effective control

charting

solids Level 1 Level 2 Level 3

Parameter Units Consensus Confidence Consensus Confidence Consensus Confidence
Suspended Solids Value Interval Value Interval
Dissolved Solids mg/L Value Interval
Total Solids mg/lL
mg/L 238 235 - 242 380 374 - 385 1928 1895 - 1961
33.0 18.7 - 47.3 44.8 21.3 - 68.3 46.0 25.3 - 66.8
254 242 - 267 400 380 - 419 1970 1942 - 1999

Description Quantity Catalog No.

Level 1 Solids 20 ml 140-702-101
Level 2 Solids 20 ml 140-702-102
Level 3 Solids 20 ml 140-702-103

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