DIY/Homemade Vitamin C Developer
Also known as: Ascorbic Acid Developer, PC-TEA
Serious DIY alternative to Xtol using ascorbic acid as primary developing agent with phenidone superadditive. PC-TEA (Phenidone-C-TEA) is the most common formulation. Results comparable to commercial vitamin C developers like Xtol and XT-3. Published times for Xtol can be used as starting points.
Temperature
20°C
18–24°C
Dilutions
2
Capacity
10
rolls per litre
Form
Liquid
Characteristics
Similar to Xtol — excellent shadow detail
Dilutions
PC-TEA formula: phenidone, vitamin C (ascorbic acid), TEA (triethanolamine). Can be replenished.
Enhanced sharpness.
Shelf Life
Concentrate
Components store indefinitely
Working Solution
2-4 weeks in full bottles
Stock replenishable similar to Xtol. One-shot at 1+1.
Often Used For
Limitations & Warnings
- Requires sourcing phenidone (photo specialty suppliers)
- TEA can be difficult to obtain in some regions
- More complex to mix than simpler DIY developers
Descriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.