N4754
Nigrosin water soluble
Powder
Synonym(s):
Acid black 2
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About This Item
CAS Number:
Colour Index Number:
50420
MDL number:
UNSPSC Code:
12171500
NACRES:
NA.47
Recommended Products
product name
Nigrosin water soluble, For use as a biological stain
Quality Level
form
powder
solubility
water: 1 mg/mL, turbid
εmax
~250 at 575 nm in 50% ethanol
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
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General description
Nigrosin is an acidic dye used as a negative stain for visualization of the capsule in bacteriological material.
Application
Nigrosin has the following applications:
- to stain live sperm
- as a viable cell staining agent especially in stem cell biology
- as a negative stain in place of India ink for spirochetes, bacteria, protozoa, and fungi
- in Dorner′s spore stain.
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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The ability to accurately measure layered biological tissue optical properties (OPs) may improve understanding of spectroscopic device performance and facilitate early cancer detection. Towards these goals, we have performed theoretical and experimental evaluations of an approach for broadband measurement of
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To determine the predictive value of the hypo-osmotic swelling (HOS) test to identify viable, non-motile sperm. Semen samples from 20 men with severe asthenozoospermia underwent traditional seminal analysis, eosin-nigrosin (EN) staining and the HOS test. A further EN stain was
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