Brookfield DV-E Viscometer - Manual (Page 25)

Brookfield Engineering Labs., Inc. Page 25 Manual No. M98-350-J0912
Normal 25°C Standard Fluids
Viscosity (cP) Viscosity (cP)
High Temperature Standard Fluids for use
with Thermosel Accessory
5
10
50
100
500
1000
5,000
12,500
30,000
60,000
100,000
HT-30,000
HT-60,000
HT-100,000
Calibrated at three viscosity/temperatures
25°C, 93.3°C, 149°C
Refer to the Brookfield Catalog for more information.
Table D-1(Silicone Oils)
Brookfield Viscosity Standard Fluid - General Information
We recommend that Brookfield Viscosity Standard Fluids be replaced on an annual basis, one year
from date of initial use. These fluids are pure silicone and are not subject to change over time.
However, exposure to outside contaminants through normal use requires replacement on an annual
basis. Contamination may occur by the introduction of solvent, standard of different viscosity or
other foreign material.
Viscosity Standard Fluids may be stored under normal laboratory conditions. Disposal should be
in accordance with state, local and federal regulations as specified on the material safety data sheet.
Brookfield Engineering Laboratories does not recertify Viscosity Standard Fluids. We will issue
duplicate copies of the Certificate of Calibration for any fluid within two years of the purchase date.
Brookfield Viscosity Standard Fluids are reusable provided they are not contaminated. Normal
practice for usage in a 600 ml beaker is to return the material from the beaker back into the bottle.
When using smaller volumes in accessories such as Small Sample Adapter, UL Adapter, Thermosel
or Spiral Adapter, the fluid is normally discarded.
Calibration Procedure for LV #1-3 (#61-63) and RV, HA, HB (#2-6) Brookfield spindles:
Note: The LV #4 (#64) and RV, HA, HB #7 have been omitted from this proce-
dure. Brookfield does not recommend the use of these spindles to perform a
calibration check on your instrument. Reasons pertain to the small amount
of sample surface area that makes contact with the viscosity standard, the
difficulty of establishing the immersion mark precisely and the need for
precise temperature control at 25°C in the immediate vicinity of the spindle.
Follow these steps using one of the recommended spindles to verfy calibration on you instrument:
1) Place the viscosity standard fluid (in the proper container) into the water bath.
2) Lower the DV-E into measurement position (with guard leg if LV or RV series viscometer
is used).
3) Attach the spindle to the viscometer. If you are using a disk shaped spindle, avoid trapping