Description
Reviews
| Brand | - |
| Category | Office Equipment, Supplies & Services / Photo Printing Equipment |
| Origin | - |
| Brand | Paisen |
| Model Number | BW-65 |
| Volume | 5 Liters |
| Chemical Type | Hypo Clearing Agent / Washing Accelerator |
| Compatible Media | Black & White Film and Photo Paper |
| Dilution Ratio | 1:4 to 1:9 (Configurable) |
| Capacity per Liter | Approx. 20-30 rolls of 35mm film |
| Shelf Life (Unopened) | 24 Months |
| Storage Temperature | 15°C to 25°C (59°F to 77°F) |
| Package Contents | 1x 5L Concentrate Bottle, Usage Guide |
Anonymous
Mar 30, 2026
Rating: 5/5
Perfect for high volume work
As a photography student, I go through chemicals quickly. This 5L bottle is economical and the dilution instructions are clear. It handles heavy loads of photo paper without losing effectiveness.
Anonymous
Mar 28, 2026
Rating: 5/5
Essential for quick turnaround
This washing accelerator significantly cuts down my processing time. The archival wash is thorough, and I love that the 5L size lasts me several months even with weekly developing sessions.
Anonymous
Mar 22, 2026
Rating: 5/5
Consistent results every time
I have been using Paisen products for years. The BW-65 ensures my negatives are completely free of fixer residue. My prints have never looked cleaner or lasted longer.
Anonymous
Mar 19, 2026
Rating: 4/5
Solid performer
Does the job well. Reduced my washing time from 30 minutes to about 10 minutes while maintaining archival quality. Smell is mild compared to other brands I've tried.
Anonymous
Mar 12, 2026
Rating: 4/5
Great value for darkrooms
Works exactly as described for both film and paper. The only reason for 4 stars instead of 5 is the cap design, which can be a bit tricky to pour without a funnel. Otherwise, excellent product.
Anonymous
Mar 03, 2026
Rating: 5/5
Highly recommended for B&W enthusiasts
If you are serious about black and white photography, this is a must-have. It prevents staining and ensures long-term stability of your images. Fast shipping too!
Q: What is the recommended dilution ratio for photo paper?
A: For photo paper, we recommend a dilution ratio of 1:4 (one part concentrate to four parts water) for optimal clearing and washing acceleration.
Q: How many times can I reuse the working solution?
A: The working solution can typically be reused for 20-30 rolls of 35mm film or equivalent sheet film/paper area, depending on the load. Discard if you notice slowing clearing times or cloudiness.
Q: Does the 5L bottle come with a measuring cup?
A: The package includes the 5L concentrate bottle and a detailed usage guide, but a measuring cup is not included. Standard laboratory graduated cylinders work best for mixing.
Q: Is this product safe to pour down the drain?
A: While less toxic than older hypo solutions, please check your local environmental regulations regarding chemical disposal. We recommend neutralizing and disposing of it at a hazardous waste facility if possible.
Q: Can this solution be used for color film development?
A: No, the Paisen BW-65 is specifically formulated for Black & White film and photo paper. It is not suitable for C-41 or E-6 color processes.
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