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VISCOSITY
The viscosity standards available from Gardco are precision materials. They are accurate to within
0.25% of the label value at specifi ed temperature. This is a much closer tolerance than viscosity measuring
devices normally available to users of viscosity cups. Therefore, there is no easy means of checking the
standard to insure that it remains at the value listed on the label except through very careful use of the
standard to insure its integrity. Included in this care should be making sure that any container used to
receive the standard, as well as the cup to be checked, the thermometer and any other stirring device,
be absolutely free of contaminants. Immediately following use, the standard should be returned to its
labeled container and capped. If there is valid reason to question the original value of the standard, it
should be replaced.
The below listed standards are used by the producer of Gardco viscosity cups not only to calibrate
the cups but also to certify such calibration under ANSI/NCSL Z540 or ISO/IEC 17025, compliant
with requirements and guidance of ISO 17034 and ISO 9001, which is available as an extra cost
service. One of the requirements under such certification is the replacement of the standard on or
before the termination date. Experience has shown, however, that in the absence of contamination,
the standards do not materially deteriorate over an extended period of time.
CAUTION: Silicone fluids should not be used to calibrate viscosity cups. These materials change the interface
between the cup surface and the test material and therefore change the cup calibration. The following is taken
from ASTM D445; Viscometers used for silicone fluids should be reserved for the exclusive use of such fl uids.
Solvent washings from these viscometers should not be used for cleaning other viscometers.
Cat. No.
VI-3801
VI-3803
VI-3805
VI-3810
VI-3811
VI-3815
VI-3819
VI-3820
VI-3821
VI-3825
VI-3826
VI-3842
12
CARE OF STANDARD OILS
G-6
G-10
G-20
G-35
G-35-P
G-60
G-100-P
G-100
G-200
G-350
G-350-P
G-J3000-P Viscosity Standard
A Material Safety Data Sheet is furnished with each bottle of "G" Series Standard Oils
Paul N. Gardner • www.gardco.com • (954) 946-9454
Description
Viscosity Standard
Viscosity Standard
Viscosity Standard
Viscosity Standard
Viscosity Standard
Viscosity Standard
Viscosity Standard
Viscosity Standard
Viscosity Standard
Viscosity Standard
Viscosity Standard
Approx. Centistokes
Call for Pricing
9
19
34
64
64
120
270
230
450
880
810
10,800
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