Turbidity Standard Sets for Lovibond Turbidimeters - EPA and ISO Approved Stabilized Formazin | Ready-to-Use Calibration for TB350, TB211 IR, TB300 IR T Cal Standards Sets:TB350 IR Set Eco-Friendly Materials: Made with OEKO-TEX® Size:3/8" FNPT Airflow Regulator - 228 SCFM
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Ships within 48 hours · Estimated delivery Oct 27 - Nov 1