Why are the specifications in ASTM D446, ISO 3105, IP 71, and BS important?

Why are the specifications in ASTM D446, ISO 3105, IP 71, and BS important?

Strict specifications and operating instructions for glass capillary viscometers are needed for the determination of kinematic viscosity of transparent and opaque Newtonian liquids according to ASTM D445, ISO 3104, and IP 71. Without these strict specifications and operating instructions, it will be impossible to meet the precision requirements for the kinematic viscosity determination mentioned in test methods ASTM D445, IP 71 and ISO 3104.

Why should you use glass capillary viscometers supplied by ZONWON?

ZONWON supplies a complete range of glass capillary viscometers. Our glass capillary viscometers are made to meet or exceed specifications required by international standards organizations including ASTM D446, ISO 3105, IP 71, and BS 188. Viscosity standards used to calibrate the glass capillary viscometers are ISO 17025 dual certified for both viscosity and density. ZONWON supplies the following glass capillary viscometers: BS/IP/RF U-tube reverse flow, BS/U-tube, BS/IP/MSL, BS/U/M Miniature U-tube, Cannon-Fenske opaque, Cannon-Fenske routine, Cannon-Manning semi-micro, BS/IP/SL(S), BS/IP/SL, Ubbelohde, Cannon Ubbelohde, Cannon Ubbelohde dilution, and Cross-arm glass capillary viscometers. All glass capillary viscometers are delivered with a calibration certificate.

Please contact our sales team ([email protected]) to get a quotation. Or visit our webshop to get price and technical information for modified Ostwald viscometers, suspended-level viscometers and reverse-flow glass capillary viscometers conform to ASTM D446, ISO 3105, IP 71, and BS 188 to determine the kinematic viscosity of petroleum liquids.

ASTM D446 & IP71

These specifications in ASTM D446, ISO 3105, IP 71, and BS 188 cover operating instructions for glass capillary kinematic viscometers of all the types described in detail for modified Ostwald viscometers, suspended-level viscometers and reverse-flow viscometers. Also, the calibration of the glass capillary viscometers is described. These specifications cover some widely used glass capillary viscometers suitable for use in accordance with test methods ASTM D445, IP 71 and ISO 3104 to determine the kinematic viscosity of petroleum liquids.

For Viscosity baths, please see ASTM D445.