Light naphtha, heptane, octane, highly aromatic solvents, and or any other petroleum-derived hydrocarbon solvent can be used. Guide for removing the G-series calibrating oil from Gardco viscosity cups.Īny remaining material in the cup must be removed by flushing with a suitable solvent. Centistoke label value of the oil is traceable to the National Institute of Standards and Technology. This is easily done with use of appropriate “G” oil listed in the Calibrating Oils table. Even so, it is good practice to periodically confirm cup calibration. These cups will give years of satisfactory service requiring only thorough cleaning following each use. GARDCO produced and calibrated S90 Zahn viscosity cups are made of stainless steel except for the name plate. S90™ is a Registered Trade Mark of the Paul N. Solvent washings from these viscometers should not be used for cleaning other viscometers. The following is taken from ASTM D445: Viscometers used for silicone fluids should be reserved for the exclusive use of such fluids. These materials change the interface between the cup surface and the test material and therefore change the cup calibration.
Viscosity cup price iso#
Gardner Company are produced in accordance with ISO/IEC 17025:2005, ISO/IEC Guide 34:2009, ISO 9001:2008.Ĭaution: Silicone fluids should not be used to calibrate viscosity cups. These standard oils prepared expressly by the Cannon Instrument Company for the Paul N.
Note: A graph is furnished with each cup showing efflux time of the "G" oil from 20 to 27 degrees Celsius. *Certified value is printed on container label. Note: Furnished with each cup is a conversion table for each tenth of a second within the cup range. Tables are available which convert between S90 Zahn Signature and EZ™ cups of the same number, to the nearest tenth of a second, to assist those who need to work with both established standards.Ĭertificate of Calibration available at additional charge for all cups.Įfflux Time Seconds “T” from Centistokes “V”Ĭentistokes “V” from Efflux Time in seconds “T” Certification with compliance to ANSI/NCSL Z540 or ISO/IEC 17025, ISO 9001, as applicable, is available at our Gardco Service Department. Manufacturing procedures include calibration with oils traceable to the National Institute of Standards and Technology (NIST). Not all S90 Zahn Cups deviate from the standard by the same amount - the range being from near compliance to a variance exceeding a factor of two. S90 Zahn Dip cups do not meet ASTM Specification D4212.
Viscosity cup price series#
Viscosity Cup flow characteristics are defined by a mathematical formula and standard “G” series Canon Calibration oils.
0 kommentar(er)
