In this Friday Tip we look at how to measure those tiny amounts of darkroom chemicals without having to buy expensive scales. Yes, it's easy and accurate enough for darkroom use in our developers, fixers etc.
Common darkroom chemical weights by the teaspoon/tablespoon.
These are "flat" teaspoon and tablespoon measurements. Buy a cheap kitchen teaspoons measurement tool, flatten the chemical with a knife by running it across the measurement tool to get accurate measurements. (see Making D-23 on this YouTube channel).
Chemical weight by flat teaspoon (tsp) or flat tablespoon (Tbl)
Phenidone 1 tsp = 2g 1/2 tsp = 1g
Metol 1 tsp 3.5g
Sodium Thiosulphate Penta. 1 Tbl = 18g 1 tsp = 6g
Hydroquinone 1 Tbl = 9g 1tsp = 3g
Sodium metaborate 1Tbl = 14.5g 1tsp = 4.8g
Sodium sulphite Ahyd. 1Tbl = 22.8g 1tsp = 7.6g
Borax 1Tbl = 15g 1tsp = 5g
Sodium carbonate 1 Tbl = 18g 1tsp = 6g
