10/9/98

Glycerin Borate jelly



Fischer - Zeit. wiss Mikrosk vol 29, 1912 p65



borax 5 grams

dissolve in 240 ml water

add 25 ml glycerine

add 40 grams gelatine,

dissolve with heat and heat until solution slightly thickens

remains fluid at room temperature



Pantin says glycerine jelly has an RI of 1.47



Apathys Gum syrup has an RI of 1.52



Picked gum arabic 50 grams

cane sugar........50 grams

distilled water 50 ml



dissolve over a water bath



add 0.05 grams thymol



said to set quickly as hard as balsam



recipes from "the Microtomist's Vade-mecum" by Bolles Lee 7th edition

1913.....







*****************************************************

Mel Dickson,

Director.

Electron Microscope Unit,

University of New South Wales.

Sydney NSW 2052 Australia



Phone (+612) 9385-6383

Fax (+612) 9385-6400

Website <http://srv.emunit.unsw.edu.au>

Perhaps you mean glycerin jelly with borax acc. to Fischer? The original

recipe was published in

Ztschr. f. wiss. Mikr., XXIX, p. 65, 1912.



The main advantage of this solution is, that it is liquid at RT... It's

said that it hardens rapidly.



This is the recipe as quoted in Langeron, M.: "Precis de microscopie",

1934, p. 603.



Distilled water 240 g

borax (= Na2B4O7): 5g

glycerin: 25g

gelatin: 40g



Dissolve all at RT. After solution put "some time" in a paraffin incubator.

This solution needs to be neutral...



I don't know the Ri of this medium...



Have you considered von Apathy's medium for your purpose?



Hope this helps...



Yvan Lindekens, Belgium.

yvan.lindekens@skynet.be