PROFESSIONAL 停顯影液，16盎司濃縮液（可調配8加侖）

The indicator dye is the reason I keep coming back to this stop bath—when it turns purple, I know exactly when to mix fresh solution, and it's saved me from ruined prints more than once. The concentrate itself is easy to measure and dissolves cleanly, and one jug stretching to 8 gallons means I'm no

This 16oz jug lasts forever since it makes eight gallons, and the color-shift indicator is perfect for when I'm printing multiple sessions. Saves me from guessing whether the bath is still good, and it's a lot cheaper than mixing fresh every time.

The indicator turning yellow the second it’s exhausted is such a relief—no more guessing if my fixer’s still good. One bottle stretches forever since it makes eight gallons, and it’s been sitting on my shelf for months without losing strength.