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Quality Control and Proficiency Samples

Standard-value, reference solutions designed to act as benchmark values for quality control and process proficiency procedures.
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151 – 165 of 176 results
151

SPEX CERTIPREP LLC 3P SILICA 30ML QC SAMPLE WS

NSI Lab Solutions Silica (WS)

ENCOMPASS_PREFERRED
152

SPEX CERTIPREP LLC 3P Hardness STND 2/PK

NSI Lab Solutions PEI-145 Hardness Drinking Water Proficiency Test; 2/PK

ENCOMPASS_PREFERRED
153

SPEX CERTIPREP LLC 3P VANADIUM 21ML QC SAMPLE WS

NSI Lab Solutions Vanadium (WS)

ENCOMPASS_PREFERRED
154

SPEX CERTIPREP LLC 3P HERBICIDES 2ML QC SAMPLE WS

NSI Lab Solutions Herbicides (WS)

ENCOMPASS_PREFERRED
155

SPEX CERTIPREP LLC 3P TRACE METALS 21ML QC SAMPLE WP

NSI Lab Solutions Trace Metals 21mL (WP)

ENCOMPASS_PREFERRED
156

SPEX CERTIPREP LLC 3P TURBIDITY 30ML QC SAMPLE WP

NSI Lab Solutions Turbidity (WP)

ENCOMPASS_PREFERRED
157

SPEX CERTIPREP LLC 3P MERCURY 20ML QC SAMPLE WP

NSI Lab Solutions Mercury (WP)

ENCOMPASS_PREFERRED
158

Inorganic Ventures QCPLUS QC SOLUTION 19 125mL
SDP

Inorganic Ventures' Quality Control Standard 19 is a 125mL certified reference material set in a nitric acid / hydrofluoric acid matrix for stability. This standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. See Certificate of Analysis for expiration.
ATTENTION: Inorganic Ventures is no longer supplying paper copies of Certificate of Analyses(CoA) and Safety Data Sheets (SDS). Please use this link to download your copies: https://www.inorganicventures.com/coa-sds-search

ENCOMPASS_PREFERRED
159

Aqua Solutions CY396 CALCIUM BLIND QA STD 4L
SDP

CY396 CALCIUM BLIND QA STD 4L ..

ENCOMPASS_PREFERRED
160

AccuStandard, Inc COC D-92-NOM FLASH POINT(200C)
SDP

COC D-92 - Nominal Flash Point (200 ºC), 250Ml

ENCOMPASS_PREFERRED
161

ERA WATERS CORP PH FOR WASTEWATER QC OR CRM
SDP

NC2136749 PH FOR WASTEWATER QC OR CRM

ENCOMPASS
162

ERA WATERS CORP pH, WasteWatR™, 250mL
SDP

One 250 mL whole-volume bottle is ready to analyze. Use with electrometric methods.

ENCOMPASS
163

CLINIQA CORP WHOLE BLD ETHANOL LVL 2 6X5ML

NC0509911 WHOLE BLD ETHANOL LVL 2 6X5ML

ENCOMPASS_PREFERRED
164

ERA WATERS CORP CHLORDANE ERA 845
SDP

NC1236062 CHLORDANE ERA 845

ENCOMPASS
165

ERA WATERS CORP EDB/DBCP/TCP
SDP

NC1174763 EDB/DBCP/TCP

ENCOMPASS