Page 38 - Feed Lab

Laboratory Glassware Cleaning Procedure Suguna Management System Ver 1.0 / SOP / FQL / P1 - 06 Page 2 of 2

be dried in the 75 °C oven. making the acid bath.

SAFETY NOTE: Put on protective equipment
3. Mycotoxin Glassware
before working with the 10% HNO solution bath.
3
FUse acetone to remove any writing on the You should have on protective gloves, a face
glassware.
shield and an apron or lab coat.
FRinse thoroughly with tap water, ensuring there FUse acetone to remove any writing on the
are not any particles left on the glassware that
glassware.
may clog the washer.
FRinse the glassware as well as possible to
FLoad in washer so that each piece will be
avoid contamination of the 10% HNO solution
washed and rinsed properly. 3
bath.
FStart the washer. Allow the washer to flush for
FMake sure the glassware is completely
approximately 3 minutes and then fill with water
submerged in the bath and allow it to soak for
and add 350 ml of detergent (DRI-CONTRAD
at least two hours.
or similar) to the wash.
FCarefully remove the glassware from the bath,
FClose the washer door and press start on the
making sure not to splash the acidic solution
control panel.
on you.
FAfter the wash cycle is complete, allow the
FRinse thoroughly with deionised water.
glassware to cool and put them in the
appropriate oven. FPut glassware in the 110 °C oven and plastic
ware in the 75°C oven. Glassware that
FPut glassware in the 110 °C oven and plastic
contains rubber seals (i.e. blender jars) should
ware in the 75°C oven. Glassware that
contains rubber seals (i.e. blender jars) should be dried in the 75 °C oven.
be dried in the 75 °C oven.

4.Cleaning Procedures Using Baths/Tubs
(Nitric Acid Bath, 10%)
All glassware used in mineral methods must be
cleaned using a 10% HNO solution bath. Only
3
Trace Metal grade HNO should be used when
3

Prepared by : Approved by :
28 Director - Technical