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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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166 – 180 of 200 results
166

AccuStandard, Inc FLASH POINT STANDARD 250ML
SDP

COC D-92 - Nominal Flash Point (230 ?C). 250 mL. 8012-95-1

ENCOMPASS
167

SPEX CERTIPREP LLC 3P CHLORDANE 2ML QC SAMPLE WS

NSI Lab Solutions Chlordane (WS)

ENCOMPASS_PREFERRED
168

SPEX CERTIPREP LLC 3P REGULATED SOCS 2ML QC SAMP WS

NSI Lab Solutions Regulated SOCs (WS)

ENCOMPASS_PREFERRED
169

SPEX CERTIPREP LLC 3P ACIDITY 100ML QC SAMPLE WP

NSI Lab Solutions Acidity (WP)

ENCOMPASS_PREFERRED
170

SPEX CERTIPREP LLC 3P PH 250ML QC SAMPLE WP

NSI Lab Solutions pH (WP)

ENCOMPASS_PREFERRED
171

SPEX CERTIPREP LLC 3P DEMAND 21ML QC SAMPLE WP

NSI Lab Solutions Demand (WP)

ENCOMPASS_PREFERRED
172

SPEX CERTIPREP LLC 3P Hardness QC CRM 250 mL

NSI Lab Solutions QCI-137 Hardness QC CRM, 250mL Single

ENCOMPASS_PREFERRED
173

SPEX CERTIPREP LLC 3P NITRITE 20ML QC SAMPLE WP

NSI Lab Solutions Nitrite (WP)

ENCOMPASS_PREFERRED
174

SPEX CERTIPREP LLC 3P NPW-Residue, 500mL

(NSI by Zeptometrix) A 500 mL ready-to-use whole volume sample to be analyzed for Total Suspended Solids in the NELAC range of 20-100 mg/L and Total Solids formulated in the NELAC range of 140-800 mg/L.

ENCOMPASS_PREFERRED
175

Grainger Condition QC Star A/O VF 4 Type R

Condition QC Star A/O VF 4 Type R

ENCOMPASS_PREFERRED
176

SPEX CERTIPREP LLC 3P PH 250ML 2ML QC SAMPLE WS

NSI Lab Solutions pH (WS)

ENCOMPASS_PREFERRED
177

ERA WATERS CORP HARDNESS POTABLE WATER STANDAR
SDP

Hardness, PotableWatR One 250 mL whole-volume bottle is ready to analyze.

ENCOMPASS
178

MANDEL SCIENTIFIC INC WATER STND 0.1G 10X5ML AMPLS

NC2217302 WATER STND 0.1G 10X5ML AMPLS

ENCOMPASS
179

CROSSTEX INTERNATIONAL GEOBACULLUS STEAROTHERMOP 10ML

GP Sus-G. stearo Growth Promotion Test Suspensions (QC Organisms)

ENCOMPASS_PREFERRED
180

ERA WATERS CORP HEXAVALENT CHROMIUM PT SAMPLE
SDP

One 15 mL screw-cap vial yields up to 2 liters after dilution. Use with IC or colorimetric methods.

ENCOMPASS