InstroTek
17
CoreLok™ Bulk Specific Gravity Data Collection Table
Sample
ID
A
Bag
Weight
(g)
B
Dry
Sample
Weight
before
Sealing
(g)
C
Sealed
Sample
Weight
in
Water
(g)
D
Dry
Sample
Weight
After
Water
Submer
sion
E
Ratio
B/A
F
Bag
Appare
nt
Gravity
From
Table
G
Total
Volume
(A+D) -
C
H
(Volume
of Bag)
A/F
I
(Volume
of
Sample)
G - H
J
Bulk
Specific
Gravity
B/I
Important
Check bags for holes and stress points prior
to use. Do not use damaged bags
Hang the provided cushioned weighing
basket in the water tank from the scale (a
hooked rod is provided)
Use the sliding plate (rubber strips up) in the
CoreLok chamber to reduce friction to the
bags
Wipe away loose debris and break sharp
points on the sample
After you load the sample in the bag, do not
touch the bag. Adjust the bag position in the
chamber by moving the sliding plate
Never place the sealed sample on a hard
surface
Test the sample immediately or a maximum
of 2 minutes after sealing the sample
Gently shake the sample in the water tank
prior to placing in the weighing basket to
remove air bubbles
Place the sample gently in the basket in the
water tank.
Do not drop the sample on the basket or in
the water tank
If weight in column D is greater than 5 grams
of weight in column B dry the sample and
repeat the test
Use the provided GravitySuite software to
calculate your bulk specific gravity
Use the double bag procedure for very
heavy samples that cause repetitive
punctures
