QUETOL 651, RESIN

C8H14O4 F.W. 174.20 CAS #2224-15-9

(Ethylene glycol diglycidyl ether)

Specific Gravity (H2O=1) : 1.15, store refrigerated 0‐5°C. Note: limited shelf life of about eight months when refrigerated. Embedding resin, component of Quetol kit. Because of the limited shelf life we obtain this item on indent ‐ allow two weeks.

C058
Quetol 651 resin
AUD245.00
225mL
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QUETOL 651 - NSA Kit

A water miscible epoxy resin used for both light and electron microscopy. Its low viscosity permits easy infiltration and embedding, and yields light-colored blocks.
Kushida, H. et al., (1986) Pro. 11th Int. Cong. Electron Microsc., p. 2177. Kyoto.
Store the Quetol refrigerated, even then the shelf life is only about eight months. Because of the limited shelf life we obtain this item on indent - allow two weeks.
Components:

  • 225mL Quetol 651 (C058)
  • 450mL NMA (C046)
  • 450mL NSA (C059)
  • 50mL DMP-30 (C053)
C034
Quetol 651/NSA embedding kit
AUD427.00
kit
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RHODAMINE B

CAS# 81-88-9, C28H31CIN2O3, Colour Index #45170

Also called Basic Violet 10. Dye content ~80%; soluble in water and ethanol.
Conn's Biological Stains, 9th ed,; Lillie, RD, Ed; Williams & Wilkins, Baltimore 1977, P332

C114
Rhodamine B, C.I. 45170
AUD36.00
100g
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C1145
Rhodamine B, C.I. 45170
AUD116.00
500g
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ROSE BENGAL

CAS# 632-69-9, Colour Index #45440

Acid Red 94.4,5,6,7‐Tetrachloro‐2',4',5'7'‐tetraiodofluorescein sodium salt.
For Conn's technique for staining bacteria and in the Kreyberg method for keratin. Total dye content 80%.

C137
Rose Bengal, certified, C.I. 45440
AUD21.00
5g
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C1375
Rose Bengal, certified, C.I. 45440
AUD45.00
25g
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RUTHENIUM RED, 37.5% RU

[(NH3)5RuORu(NH3)4ORu(NH3)5]Cl6·4H2O F.W.858.42 CAS #11103-72-3

  • Stain for monopolysaccharides and tight junctions. Luft, J.T., Proc. 6th Int. Cong. Em (1966); J. Cell. Biol., 57, 874 (1973).
  • Stain for pectin and for diverse cell surfaces. J. Cell Biol.,23, 54A (1964).
  • "Positive Staining for EM" van Nostrand Reinhold Co., New York, NY (1975) pp 163‐165.
  • Ruthenium Red and Violet II. Fine structural localisation in animal tissues. Luft J.H. Anat. Rec., 171:369, (1971a)
  • Structure and staining characteristics of myofibre external lamina. Zacks, S.I. et al. J. Histochem. Cytochem., 21:703 (1973)
  • Glycoaminoglycans in developing chick‐embryo aorta revealed by ruthenium red: an electron microscopy study. Kadar, A. et al. J. Pathol., 108:275 (1973)
  • Uptake of marker particles by in vitro ventilated and perfused rat lung. Vidic, B. Am. J. Anat., 138:521 (1973)
C075
Ruthenium Red
AUD120.00
1g
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SAFRANIN O

Colour Index #50240, CAS# 477-73-6

Also known as; Basic Red.
For use as a chromosome stain in the Flemming triple stain, in combination with Light Green SF Yellowish or Fast Green FCF, and in Gram stains.
Minimum dye content 80%.

C138
Safranin O, certified, C.I. 50240
AUD32.00
25g
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C1381
Safranin O, certified, C.I. 50240
AUD86.00
100g
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C1385
Safranin O, certified, C.I. 50240
AUD341.00
500g
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Orange silica gel hydration chart
Orange silica gel (desiccant) hydration chart
ORANGE SILICA GEL (DESICCANT)

Desiccant, technical grade, CAS# 112926-00-8

Silica gel is a desiccant (drying agent) with the capacity to absorb 27% of its weight in water within one day at 80% relative humidity. Bulk density is about 0.7 (70g/100mL). 2 to 4mm pellet size range, which equates ASTM mesh 8 to 10. Dry pellets are orange and turn dark green when near saturation. Heat applied to an open container holding silica gel ‐ a hotplate or an oven at 110°C, will restore silica gel to its previous moisture absorbing capability. Unlimited cycles are possible.
Silica gel is produced by the reaction of sulphuric acid with sodium silicate.
Orange silica gel does not contain cobalt, which is the indicator in blue silica gel. Silica gel has very low toxicity and ingesting or inhaling small amounts of silica gel dust is not harmful.

Silica gel does not dry completely below about 105°C. The orange indicating dye may be damaged at temperatures above 125°C. Higher temperatures also cause progressive collapse of the desiccant's fine adsorbent structures. ProSciTech recommends the refurbishing of silica gel between 105 and 120°C for at least 2 hours, depending on depth of pellets.

Silica gel FAQs ‐ Also contains a colour chart showing colour changes of orange silica gel with increasing hydration
Our price for the 25kg drum includes freight to any Australian destination, but GST is always additional.

For molecular sieve see C830 on page C6

C81-005
Silica gel, 2 - 4mm pellets, orange
AUD21.00
500g
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C81-020
Silica gel, 2 - 4mm pellets, orange
AUD46.00
2kg
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C81-250
Silica gel, 2 - 4mm pellets, orange
AUD500.00
25kg
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SILVER NITRATE

CAS# 7761-88-8

Reagent, ACS/ISO
AgNO3 F.W.169.89 Assay 99.99% .
Exceeds ACS and Analar specifications. We supply many histopathology laboratories with this chemical.
Swift, J.A., The electron histochemistry of cystine containing proteins in thin transverse section of human hair. J. R. Microsc.Soc., 88,449 (1968). Thiery, J.P., Mise en evidence des Polysaccharides sur coupes fines en microscopie electronique. J.Microsc. (Paris) 6, 987 (1967)
Rambourg, A., An improved silver methenamine technique for the detection of periodic acid-reactive complex carbohydrates with the electron microscope. J. Histochem. Cytochem. 15,409 (1967). Hermandez et al., Periodic acid-chromic acid methenamine silver technique for glycoprotein detection in the electron microscope., J.Histochem.Cytochem. 16,507 (1968). Braak, H., and Braak, E., A simple procedure for electron microscopy of Golgi-impregnated nerve cells. Neurosci. Lett. 32,1 (1982)

C139
Silver nitrate, ACS/ISO grade
AUD107.00
25g
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C1391
Silver nitrate, ACS/ISO grade
AUD368.00
100g
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C1395
Silver nitrate, ACS/ISO grade
500g
QUOTE
SILVER POWDER

CAS# 7440-22-4

Use this to make silver loaded epoxy and more. Very fine, high purity silver powder. May be used to produce electrically highly conducting paints and especially epoxy resins. Usually, the mixture is one half by volume, of powder and a quarter each of epoxy components A + B. These materials mix very easily, but conductivity does not gradually change; rather if a little less silver is used, suddenly conductivity may be completely lost.
Unlike prepared silver epoxies, the powder has an unlimited shelf life and the mixture ratio can be varied to suit. Also, fast-curing or super-strong epoxy may be used as required and silver powder is rather more economical than prepared epoxies.
Note that because of the small particle size the powder and any solutions made are a little yellowish and darker than silver. This relates to particle size and refractive index and not purity.
Product data:
  • Average particle diameter 1.4-3.6(µm) (ASTM B330-82)
  • Apparent (tap) density 1.6-2.6 g/cm3 (ASTM B527-81)
  • Spec. surface area 0.2-0.6m2/g (Quantachrome Monosorb BET Method)
  • Silver contents, minimum 99.9%
  • Heavy metals 0.02% (max.); Na + K 0.015% (max.)
    Ask for bulk prices for well in excess of 200g please.
C920
Silver powder
20% DISCOUNT FOR 10
AUD57.00
20g
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C920-1KG
Silver powder
1000g
QUOTE
SIRIUS RED F3B

C.I.# 35780, C45H26N10O21S6Na6 with FW1373.125, CAS# 2610-10-8

Highly water soluble red dye, but has poor solubility in ethanol. Also called Direct Red 80 and in the class of Tetrakisazo dyes.

Employed as a substitute for acid fuchsin in van Gieson type procedures. It is also used for the demonstration of amyloid by hydrogen bonding, in techniques similar to those using Congo red. Like that dye it retains the green birefringence, but is a little darker.

C102
Sirius Red F3B, C.I. 35780
AUD19.00
25g
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C1021
Sirius Red F3B, C.I. 35780
AUD33.00
100g
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C1025
Sirius Red F3B, C.I. 35780
5% DISCOUNT FOR 2
AUD111.00
500g
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SODIUM CACODYLATE TRIHYDRATE

CAS# 124-65-2, C2H6AsNaO2 :3H2O F.W.214.04.

Sodium dimethyl arsenate. Cacodylic acid‐sodium salt. Buffer for EM.
Toxic and carcinogenic; use gloves and fumehood.
Certificate of Analysis:

Identity: Conforming
Appearance: Small Crystals
Colour: White
Odour: None
Aqueous solution (2g 10mL): Colourless
Assay: % 99.52
Loss on drying: % 25.39
Chlorides: % 0.0050
Sulphates: % 0.0150
Inorganic Arsenic: % 0.0030

C020
Sodium cacodylate trihydrate
AUD194.00
100g
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C0205
Sodium cacodylate trihydrate
AUD690.00
498g
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SODIUM CHLORIDE LR

NaCl, CAS No. 7647-14-5, MW 58.44.

Sea salt, rock salt, table salt, halite.
Colourless transparent crystals or white crystalline powder, hygroscopic. Assay 99.0% min.
MP 101°C, BP 1461°C

C017
Sodium chloride LR
AUD43.00
500g
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SODIUM CITRATE

Na3C6H5O7·2H2O
F.W. 294.11, CAS #6132-04-3

Granular, Reagent Grade.
Assay 99.9%
Insoluble Matters 0.005%
Free Acid (as Citric) 0.02%
Free Alkali 0.05%
Chloride 0.003%
Sulphate 0.005%
Calcium 0.005%
Heavy Metals .3ppm
Iron 0.001%

C077
Sodium citrate
AUD68.00
500g
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SODIUM HYDROGEN PHOSPHATE, DIBASIC

Na2HPO4 :7H2O, F.W. 268.07, CAS #7782-85-6 Reagent A.C.S.

Assay 98.0‐102.0%
Loss on Drying @ 105°C 43‐50%
pH of a 5% solution @25°C 8.7‐9.3
Specifications:
Insoluble Matters <0.005%
Chloride 0.001%
Nitrogen Compounds 0.001%
Sulphate 0.005%
Arsenic 0.0005%
Heavy Metals 0.001%
Iron 0.001%

C217
Sodium hydrogen phosphate, dibasic
AUD112.00
500g
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SODIUM HYDROGEN PHOSPHATE, MONOBASIC

NaH2PO4 :H2O, F.W. 137.99, Hydrate CAS #10049-21-5 Reagent A.C.S.

Assay 98.0‐102%
pH of a 5% solution @25°C‐4.1‐4.5

Specifications:

Insoluble Matters‐ <0.01%
Chloride 5ppm
Nitrogen Compounds 0.001%
Sulphate. 0.003%
Arsenic. 0.5ppm
Heavy Metals 0.001%
Iron 0.001%

SODIUM HYDROXIDE SOLUTION

CAS #1310-73-2

2N Standardised. Carbonate‐free. This solution is prepared from ACS reagent grade sodium hydroxide. It is standardised colourmetrically against potassium biphthalate as primary reference material. Normal Concentration 1.98‐2.02

C201
Sodium Hydroxide 2N Solution
AUD55.00
225mL
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SODIUM TUNGSTATE

CAS# 10213-10-2,Reagent, A.C.S.
Na2WO4 :2H2O F.W. 329.86


Assay: 99.0 ‐ 101.0%
Specifications:

Insoluble Matters: 0.01%
Chloride: 0.005%
Molybdenum: 0.001%
Nitrogen: 0.001%
Sulphate: 0.01%
Arsenic: 0.0005%
Heavy metals: 0.001%

Stocker, J. C., Sodium Tungstate as a stain in Electron Microscopy. Bio.Cell. 29,211 (1977)

C142
Sodium tungstate
AUD36.00
25g
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SPURR'S EMBEDDING KIT
CAUTION -use gloves and fume hood;
ERL is a carcinogen

975g low viscosity embedding kit.
Spurr A. R., J.Ultrastruct.Res., 26, 31-42 (1969)
Consists of:

Request data sheet.
Note: Minor acid number variation of some resins results in a colour change when the mixture is made up: from clear to amber to pink. This does not affect resin performance.

C035
Spurr's embedding kit
AUD143.00
ea
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SUDAN BLACK

CAS# 4197-25-5, Colour Index #26150, F.W. 456.56

Biological stain. Stains lipids in light and electron microscopy.

C080
Sudan Black, certified, C.I. 26150
AUD28.00
25g
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C0801
Sudan Black, certified, C.I. 26150
AUD68.00
100g
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C0805
Sudan Black, certified, C.I. 26150
5% DISCOUNT FOR 2
AUD262.00
500g
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SUDAN III

CAS# 85-86-9, Colour Index #26100

Also known as; Scarlet B. Stains lipids in light and electron microscopy. Minimum dye content is 75%.

C143
Sudan III, C.I. 26100
AUD22.00
25g
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C1431
Sudan III, C.I. 26100
AUD46.00
100g
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C1435
Sudan III, C.I. 26100
AUD166.00
500g
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SUDAN IV

CAS# 85-83-6, Colour Index #26105

Also known as; Scarlet Red, Scharlach, Solvent Red 24.
Stains lipids in light and electron microscopy. Minimum dye content 80%.

C144
Sudan IV, C.I. 26105
AUD20.00
25g
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C1441
Sudan IV, C.I. 26105
AUD36.00
100g
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C1445
Sudan IV, C.I. 26105
AUD127.00
500g
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