Toxicity
Tox ici ty
Page 2 of 6
Toxicity_None_Other_Eng_Ody.fm
1. Inoculate a Lauryl
Tryptose broth tube with
an E. coli Aqua QC-Stik™
according to the
instructions that come
with the stick.
2. Incubate the Lauryl
Tryptose Broth Tube at
35 °C (95 °F) until the
medium is visibly turbid
(approximately 12 hours).
Turbidity develops much
faster in the incubator
than at room
temperature.
3. Inoculate a new
Lauryl Tryptose Broth
Tube by first inverting
the tube and switching
the caps of the two tubes.
In this way, several
medium vials can be
inoculated from one
Aqua-QC Stick™.
4. Invert the new tube.
After incubation, this
new vial may be used in
subsequent tests.
If toxicity tests will be run
on consecutive days,
inoculum may be kept
several days at room
temperature.
Cul tu res 10 to 72 ho ur s o ld
give best results.
1. Touch Single
Wavelength,
then touch λ.
Enter
603 nm. Touch OK.
2. Fill a Test ‘N Tube
sample cell with
deionized water. This is
the blank.
3. Wipe the outside of
all the cells with a tissue
to remove fingerprints
and other marks.
4. Install the 16-mm
adapter.
Note: See Section 2.6 on
page 26 in the Instrument
Manual for installation details.
Insert the blank into the
adapter.
10 mL
20 mL
25 mL
Inoculum Development Using Aqua QC-Stiks
Test ‘N Tube Colorimetric Reaction
Single Wavelength
OK
λ
B
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