These reusable 5ml PYREX®, 10ml PYREX®, and 25ml PYREX® pipets are calibrated to Class A tolerances in accordance with ASTM E-542, and ASTM E-1293. Each pipet is individually serialized and supplied with a Certificate of Identification and Capacity, traceable to NIST standards. Calibrated "to deliver" (TD) their total capacity without blow-out. Color-coded by size for easy identification. Colored graduations are enameled onto the glass. The top end is constricted (Mohr type). Non-Sterile.
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