Bellini Borax, 200 grams

Borax, also known as sodium borate, sodium tetraborate, or disodium tetraborate, is an important boron compound, a mineral, and a salt of boric acid.

It is a mild alkali/accelerator for fine grain developers and is also used as a toner additive.

A typical Fine Grain Developer made using Borax is:

Adox M-Q Borax Fine Grain Film Developer

Metol 2 g

Sodium Sulphite (anh) 80 g

Hydroquinone 4 g

Borax 4 g

Potassium Bromide 0.5 g

Water to 1 litr

Use Full strength

Development times are typically 10%-20% longer than D76/ID-11

The molecular formula is Na2B4O7?10H2O.