VISCOSITY
12
CARE OF STANDARD OILS
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
I
SO 17034 and I
SO 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.
The information contained herein, or supplied by us or on our behalf in any other manner is based on data obtained by our own research and is considered
accurate. However, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA, THE RESULTS TO BE OBTAINED
FROM THE USE THEREOF, OR THAT ANY SUCH USE WILL NOT INFRINGE ANY PATENT. This information is furnished upon the condition that the
person receiving it shall make his own tests to determine the suitability thereof for his particular purpose.
Cat. No.
Description
Approx. Centistokes
Call for Pricing
VI-3801
G-6
Viscosity Standard
9
VI-3803
G-10
Viscosity Standard
19
VI-3805
G-20
Viscosity Standard
34
VI-3810
G-35
Viscosity Standard
64
VI-3811
G-35-P
Viscosity Standard
64
VI-3815
G-60
Viscosity Standard
120
VI-3819
G-100-P
Viscosity Standard
270
VI-3820
G-100
Viscosity Standard
230
VI-3821
G-200
Viscosity Standard
450
VI-3825
G-350
Viscosity Standard
880
VI-3826
G-350-P
Viscosity Standard
810
VI-3842
G-J3000-P Viscosity Standard
10,800
A Material Safety Data Sheet is furnished with each bottle of “G” Series Standard Oils
Paul N. Gardner • www.gardco.com • (954) 946-9454
