To lay down the procedure for automatic basket mill operation. And
2.0 SCOPE
2.1 This
procedure applies to Quality Control Department.
3.0 RESPONSIBILITIES
3.1
QC chemists to prepare and follow the SOP.
3.2 Head – QA & QC for implementation of SOP.
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4.0 Procedure of Basket Mill Operation
4.1 Switch on the
MCP 3 phase line and main switch.
4.2 Put the premix into the Desperate disperser.
4.3 Grind the premix for 4-5 hours. and check from the Hageman Gauge the
particle size i.e. 2 microns.
4.4 If the
particle size is not reached then further grind the pre-mix till the particle
size becomes less than 2-micron check particle size from the Hageman
Gauge after intervals of time.
4.5 Maintain a
temperature of not more than 30° C. If the temperature increases by more than
30° C then start cooling by the circulation of cool water through the double-walled
basket milling system.
4.6 After
completing your pre-dispersion, the dissolver shaft can be replaced by the
basket mill without the need for any tools.
4.7 Carefully draw pigment film on the drawdown paper with the help of DRAWDOWN BAR COATER.
4.8 Now take
the dEand
Strength reading in UV
Visible Spectrophotometer Premier Color Scan Model No.-SS 5100A and
compare the strength with each other.
4.9 Place the film on the drawdown paper in a folder, label the
folder, and store it in a clean, dry place.
4.10 Now
switch off the MCP 3 phase line and main switch.
5.0 ABBREVIATIONS
SOP: Standard
Operating Procedure
QA: Quality
Assurance
QC: Quality
Control
1.0 REFERENCE: Internal
Sop for microcentrifuge | SOP of centrifuge
To lay down the procedure for CLINICAL OR MICRO-CENTRIFUGE operation.
This procedure applies to Quality Control Department.
2.1 QC chemists to prepare
and follow the SOP.
2.2 Head – QA & QC for
implementation of SOP.
4.0 OPERATION PROCEDURE:
LOAD SAMPLES
4.1 Select the
appropriate centrifuge based on the volume of the sample(s) and the desired
speed and temperature.
4.2 Ensure that the centrifuge is located on a rigid, flat,
level surface.
4.3 Remove
or lift the cover from the centrifuge. Insert sample(s) into the rotor
making sure to place two samples opposite of each other to maintain balance.
4.4 If an odd
number of samples need to be spun, make a counterbalance by filling an empty
test tube or MICRO-CENTRIFUGE tube with an equal volume of water.
4.5 Securely screw on or close the lid of the centrifuge.
CENTRIFUGE OPERATION
4.6 Set the desired speed, time, and temperature (if applicable) on the
centrifuge.
4.7 Press the “Start” button and wait for the instrument to ramp up to the
desired speed.
Note: It
is normal to see a small vibration in the instrument as the speed increases,
but any large vibration in the instrument or irregular noise may indicate that
something has gone wrong with the run. Press the “Stop” button and
make sure that the tubes are balanced properly.
4.8 When
the run has completed and the rotor has come to a complete stop, unscrew the
rotor lid and carefully remove the samples to prevent re-suspension of the
sediments
Paint or pigment Film from draw-down
Paper
Chemistry Definition | Chemistry
fundamentals
5.0 Abbreviations:
QC - Quality
Control
SOP - Standard
Operating Procedure
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