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Chapter 4: Instrument Qualification
BioTek Instruments, Inc.
Absorbance Liquid Tests
Conducting Liquid Tests confirms the Synergy™ HT’s ability to perform to specification
with liquid samples. Liquid testing differs from testing with the Absorbance Test Plate in
that liquid in the wells has a meniscus, whereas the Test Plate’s neutral density glass filters
do not. The optics characteristics may differ in these two cases, thus alerting the operator
to different types of problems.
•
Liquid Test 1
confirms repeatability and alignment of the reader when a solution
is used in the microplate. If these tests pass, then the lens placement and optical
system cleanliness are proven.
•
Liquid Test 2
can be used to test the alignment, repeatability, and accuracy of the
reader if an Absorbance Test Plate is not available.
•
Liquid Test 3
is provided for sites requiring proof of linearity at wavelengths
lower than those attainable with the Absorbance Test Plate. This test is optional
because the reader has good “front end” linearity throughout its wavelength range.
For Liquid Tests 1 and 2, the tester is instructed to prepare the stock dye solution described
on the next page. The purpose of the formulation is to create a solution that absorbs light
at ~2.0 OD full strength when dispensed at 200 L in a flat-bottom microplate well.
Alternatively, any solution that gives a stable color will suffice. (This includes substrates
incubated with an enzyme preparation and then stopped with an acidic or basic solution.)
Some enzyme/substrate combinations that may be used as alternates to the described dye
are shown below:
Table 1: Typical Enzyme-Substrate Combinations and Stopping Solutions
Enzyme
Substrate
Stopping Solution
Alkaline
Phosphate
o-nitrophenyl phosphate
3N sodium hydroxide
beta-
Galactosidase
o-nitrophenyl -beta-D
galactopyranoside
1M sodium carbonate
Peroxidase
2,2'-Azino di-ethylbenzothiazoline-
sulfonic acid (ABTS)
citrate-phosphate buffer, pH 2.8
Peroxidase
o-phenylenediamine
0.03N sulfuric acid
Содержание Synergy HT
Страница 1: ...Operator s Manual Multi Mode Microplate Reader Synergy HT ...
Страница 2: ......
Страница 22: ...xx Preface BioTek Instruments ...
Страница 142: ...120 Chapter 4 Instrument Qualification BioTek Instruments Inc ...
Страница 144: ...122 Chapter 4 Instrument Qualification BioTek Instruments Inc ...
Страница 174: ...152 Chapter 5 Preventive Maintenance BioTek Instruments Inc ...
Страница 186: ...164 Appendix B Computer Control BioTek Instruments Inc ...
Страница 236: ...214 Appendix D Specifications BioTek Instruments Inc ...
Страница 240: ...218 Appendix E Instrument Dimensions for Robotic Interface BioTek Instruments Inc ...