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90A1

Sigma-Aldrich

Leukocyte α-Naphthyl Acetate (Non-Specific Esterase) Kit

Select reagents packaged in gelatin capsules.

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About This Item

MDL number:
MFCD08705438
UNSPSC Code:
41116123
NACRES:
NA.47

Quality Level

500

form

liquid

shelf life

Expiry date on the label.

IVD

for in vitro diagnostic use

application(s)

hematology
histology

shipped in

wet ice

storage temp.

2-8°C

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Related Categories

Application

Esterases are ubiquitous in nature and encompass a series of different enzymes acting upon select substrates. According to the methodology, α-naphthyl acetate is enzymatically hydrolyzed, liberating a free naphthol compound. This then couples with a diazonium compound, forming black colored deposits at sites of non-specific esterase activity. This enzyme is detected primarily in monocytes, macrophages and histocytes, and is normally absent in granulocytes. Lymphocytes may occasionally exhibit enzyme activity. A sodium fluoride inhibition procedure may be run to demonstrate monocyte inhibition. The procedure is run at 37 °C and may be utilized with blood, bone marrow films, tissue-touch preparations, cytocentrifuge preparations and frozen sections. The enzyme does not survive paraffin processing.

Kit Components Only

Product No.
Description
  • α-Naphthyl acetate (90-6) 10 x 20
  • Citrate solution (386-1) 20 mL
  • Ethylene glycol monomethyl ether 25 mL
  • Fast Blue RR Salt (FBS-25) 10 caps
  • Mayer's Hematoxylin Solution (MHS-1) 100 mL
  • TRIZMAL™ 7.6 Concentrate 50 mL

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Met. Corr. 1 - Repr. 1B - Skin Corr. 1B - STOT RE 2 - STOT SE 1

Target Organs

Immune system, thymus

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

104.0 °F - closed cup

Flash Point(C)

40 °C - closed cup

Certificates of Analysis (COA)

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