The well-known Paterson Graduates are made from transparent polystyrene moulded under strictly controlled conditions to ensure total accuracy.
They are of a cylindrical laboratory design giving uniform widely separated markings, calibrated in metric, Imperial and US scales, which are very easy to read.
They are resistant to most photographic chemicals, and come in five sizes, each with accurate, easy to read markings.
11oz (300ml)
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Paterson makes the best graduates for photography chemical mixing and measuring. If you buy a different brand, you're missing out. Also, I've used Paterson graduates that were decades old, still hold up perfectly.
Accurate measurements. High quality plastic does not stain with my RA-4 chemicals. No problems with cross contamination, even when filling with chemical concentrates.