BioSciences - Polysciences, Inc.

Electron Microscopy
EM Reagents
BioSciences
Chloroauric acid [16961-25-4] H5bd ...........................................
MW 393.8 d 3.90
Used for production of colloidal gold solutions.
Cobalt (II) chloride, EM grade [7646-79-9] HX7g .................................
Used to intensify DAB reaction product. J. Histo. Cyto., 30, 1097 (1982); 29, 775 (1981)
Colchicine [64-86-8] BHX6g ...................................................
MW 399.4 mp 155-157° Requires Poison Pack
An antimicrotubular effector. Interferes with microtubule organization by binding specifically with
tubulin. Used for research in plant genetics.
Microtubules 11 (1978), Springer-Verlag, Berlin
ERL-4221 [2386-87-0] HO4g .....................................................
(3,4 Epoxy Cyclohexyl Methyl 3,4 epoxy Cyclohexyl Carboxylate)
MW 252.3 g/mole bp (760 mm Hg) > 250°C in Water: (weight % at 20k°C)
< 0.06% Appearance: transparent, low color viscous liquid C 14 H 20 0 4
Freezing Point: -35ºC Specific Gravity: (20ºC)~ 1.17
ERL-4221 is a cycloaliphatic, diepoxy functional organic compound that is a
useful building block in the production of semi-hard to hard cured epoxy resins.
It is incompatible with amines, acids and strong bases and will cure to form a
resinous product. ERL-4221 is often used in manufacture of plastic embedding
kits for electron microscopy.
Formvar 15/95 (Poly[vinyl formal]) [9003-33-2] H4g
MW 24,000-40,000 n20
D 1.500 Requires Poison Pack Tg 108° powder TSCA
Powder used to make support films on E.M. grids for fragile samples. Polymer contains cyclic acetal
units, some residual hydroxyl groups. Soluble in: acetic acid, dioxane, THF, chloroform.
Catalog # Size
Formvar 15/95 (Poly[vinyl formal]) 00631-100 100 g
Formvar 15/95 (Poly[vinyl formal]), 0.5 wt%
Solution in 1,2-Dichloroethane
04672-100 100 g
Lead Citrate Trihydrate [512-26-5] HM5g .......................................
MW 1053.8
The most popular lead stain for EM applications.
J. Cell Biol., 17, 208 (1963); J. Cell Biol., 25, 407 (1965)
Lead Citrate, Powdered Fines Grade (< 5 µm) [512-26-5] HM5g ...................
MW 1053.8 Powdered
The most popular lead stain for EM applications. Carbonate free material.
Reynolds, J. Cell Biol., 17, 208 (1963) Venable and Coggeshall, J. Cell Biol., 25, 707 (1965)
Lead (II) Nitrate, 99% (ACS Reagent) [10099-74-8] BHV7g ........................
MW 331.20 d 4.53
Used by Reynolds to make Lead Citrate, carbonate free.
Stains and Cytochemical Methods, Plenum Press, 223 (1993)
Multiple Stain Solution (Paragon Stain) C5g ...................................
Used in Tzanck preparations of herpetic lesions and differentiates acidophilic
and basophilic structures. Multiple Stain is a replacement for the former Paragon
Multiple Stain (PMS). Can be directly applied to frozen sections, epoxy,
JB-4 ® embedded sections or paraffin. It is utilized as a general cytoplasmic
and nuclear stain. Multiple Stain also differentiates various cytologic processes
including basal cell carcinoma, squamous cell carcinoma, malignant melanoma,
B-cell lymphoma, acute myelomonocytic leukemia and metastatic breast cancer.
Multiple Stain Solution is an easy to use, one step procedure with H & E
quality staining. Technical Data Sheet #269
Kidney stained with Multiple
Stain Solution in Peel-A-Way ®
Micro-Cut Paraffin, 4u, 10X
00395-1 1 g
04930-100 100 g
00345-500 500 mg
24738-250 250 g
00378-100 100 g
25350-100 100 g
00785-100 100 g
08824-50 50 ml
08824-100 100 ml
For more information please call (800) 523-2575 or visit: polysciences.com 73