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VISCOSITY
THIS INFORMATION PERTAINS ONLY TO VISCOSITY CUPS MADE
A. One GARDCO Dip-Type Viscosity Cup
B. The Conversion Grid sheet (for cup chosen) to convert seconds effl ux time (to nearest tenth of a
second) to centistoke viscosity. Every Gardco Cup is furnished with such a data sheet.
C. One pint of certifi ed calibration oil (appropriate to cup chosen, see chart below)
Standard
Centistokes*
Oil
Viscosity
G-6
G-10
G-20
G-35
G-60
G-100
G-200
G-350
*These are nominal values. For the actual centistoke value of the standard, refer to the value on the bottle label.
**NOTE: The 8mm ISO Cup is not available in the Dip version.
D. To insure highest accuracy of calibration, we recommend the use of ASTM mercury fi lled glass
type thermometers having an accuracy of 0.1°C (0.2°F). Use any of the following:
1.
Gardco Cat. No. VI-3130 glass mercury fi lled thermometer, 4-1/2" length, 20-30°C.
range.
2.
Gardco Cat. No. TH-02232 °C ASTM mercury fi lled glass thermometer, 10.8" length,
19-27°C. range.
3.
Gardco Cat. No. TH-02233 °F ASTM mercury fi lled glass thermometer, 10.8" length,
66-80°F. range.
E. Container: 600 ml capacity glass beaker LA-2029060. LA-2029100 1000 ml glass beaker is
recommended for the Fisher Dip Cup.
F. Gardco Cat. No. TM-AX705 digital electronic stopwatch, 0.01 second.
G. Reference literature:
1.
Gardco Viscosity cup leafl et (for cup chosen)
2.
Viscosity Cups-Common Questions and Their Answers leafl et
3.
Gardco Viscosity Cup Equivalent Wall Chart (VI-VCC) or Slide Chart (VI-9939)
4.
Gardco General Catalog
14
PROCEDURE FOR CALIBRATION FOR
DIP-TYPE VISCOSITY CUPS
BY PAUL N. GARDNER (GARDCO)
EXAMPLE OF MATERIALS NEEDED
FOR CALIBRATION OF A DIP-TYPE VISCOSITY CUP
EZ™
S90 Zahn
Cup No.
Cup No.
8.9
—
—
19
1
—
34
—
1
64
—
—
120
2
2
230
—
3
450
3, 4
—
880
5
4, 5
Paul N. Gardner • www.gardco.com • (954) 946-9454
Mini Ford
Gardco/ Fisher
Dip Cup No.
Dip Cup No.
0
—
1
—
—
1
2
2
3, 4
3
—
—
5
4
—
—
Std. Ford Dip
Gardco/ISO
Cup No.
Dip Cup mm
—
—
1
3
—
—
2
4
3, 4
—
—
6
5
—
—
**8
Gardco/Din
Dip Cup mm
—
—
—
—
—
4
—
—
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