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Proficiency Testing

Looking for the best reference materials to enhance your analysis?
The VHG PTP is intended to provide laboratories with a method of monitoring their analytical performance as measured against Certified Reference Materials (CRMs) and is ISO/IEC 17043 accredited.

Our PTP products can help you to demonstrate analytical competency and satisfy third-party accreditors needs.

PTP Sample for Elemental Analysis of Lube Oil 25 mL VHG-PTPLUBEMO-25
PTP Sample for Lead in Isooctane Analysis 25 g VHG-PTPPBISO-25G
PTP Sample for Sulfur in 20 cSt Mineral Oil Analysis 25 mL VHG-PTPS20M-25
PTP Sample for Sulfur in B100 Biodiesel Analysis 25 mL VHG-PTPSB100-25
PTP Sample for Sulfur in Crude Oil Analysis 25 mL VHG-PTPSCRD-25
PTP Sample for Sulfur in #2 Diesel Fuel Analysis 25 mL VHG-PTPSDSL-25
PTP Sample for Sulfur in Isooctane Analysis 25 mL VHG-PTPSISO-25
PTP Sample for Elemental Analysis of Oils 25 g VHG-VPTPMO-25G
PTP Sample for Particle Count Analysis 125 mL VHG-VPTPPC-125
PTP Sample for Particle Count Analysis (traceable to NIST SRM 2806a) 100 mL VHG-VPTPPC-2806A-100
PTP Set (contains one of each of the following: VPTPMO, VPTPVISC, VPTPPC) each VHG-VPTPSET1
PTP Sample for Viscosity Analysis 50 mL VHG-VPTPVISC-50


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