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.
Splicable Folding Food Warmer Partition Temperature Control Insulation Plate Hot Dish Plate Induction Cooker Plate Constant Temperature Heating Food Warmer Table Mat
$315.00
Marie's Kneaded Eraser Cotton for Sketching, Student-Use Blending Stump, Makeup Sponge for Art Students, Paper Blending Tool, Soft Absorbent Water-Drop Sponge Ball for Sketching
$8.33
Soft Cheese Processing Equipment, Lab-Type Cheese Stretching and Mixing Machine, Multi-Function Hot Water Stretching Unit
$210,210.00
Imported IKO Needle Roller Bearings TAF121912, 121915, 121916, 142212, 142216, 142220
$26.00
Portable Watercolor Sketchbook – 100% Cotton Mini Square Pocket Book for Travel, On-the-Go Sketching, Tear-Off Art Pages
$10.90
Dongguan Rotary Pad Printer Manufacturer - Fully Automatic 4-Station Pad Printer for Plastic, Metal, Text, Patterns, and Logos
$500.00
Custom Solid Wood Plaque, Antique-Style Wooden Sign with Engraving, Shop Signboard, Couplet, Carved Wood Plaque
$17.00
No-Drill Over-Toilet Storage Rack for Bathroom Wall Gap Behind Tank
$24.55
Upgraded Breakfast Food Warmer Display Cabinet - For Fried Chicken, Pies, Roasted Meat, with Crisp Preservation and Constant Temperature Control
$4,920.00
Butterfly Silicone Mold for Handmade Soap, Fondant, Chocolate, and Ice Cream
$14.00
Professional Music Services: Harmony Arrangement, Vocal Recording, Sheet Music, Mixing & Campus Orchestration
$20.00
Chunfei Grocery Store Yunan GR02 Gravel Bike Thru-Axle Disc Brake Light Load V Travel Many Rack Mounts
$6,445.00
![Pad Printing Silicone Head Mold with Blister Cover, Long Crystal Mold for Pad Printing Machines [Long Strip]](https://8.221.125.214/cache/small/product/270328/legacy-main-ca45adf23667d6b16fd9f3c4.webp)
Pad Printing Silicone Head Mold with Blister Cover, Long Crystal Mold for Pad Printing Machines [Long Strip]
$5.00
Remote-Controlled Automatic Fog Cannon for Xinjiang and Inner Mongolia Mines - Explosion-Proof, Anti-Freeze, Noise-Reducing Dust Suppression Sprayer for Coal Yards
$6,000.00
UV Glue for Bonding PET to Melamine Board, PC to Melamine Veneer, Invisible Adhesive for Glass Sliding Doors with UV Curing
$326.00
Mobile Welding Fume Purifier, Industrial Soldering Smoke Extractor, Welding Fume Collector and Exhaust Machine
$2,760.00
Upgraded Commercial Constant-Temperature Heated Display Cabinet for Fried Chicken, Meat Pies, and Breakfast Pastries
$5,510.00
2025 New Waterproof Swim Bag with Dry-Wet Separation - Lightweight Gym and Beach Tote for Men and Women
$14.80
4-Piece Canvas Stretching Tool Set with Wide-Jaw Pliers, Manual Staple Gun, and Starter Tool for Oil Painting Frames, Includes Tutorial
$10.20
Construction Anti-crack Steel Wire Mesh 4mm for Concrete Floors - Thickened Galvanized Iron Grid
$10.59
Japanese Dopamine Style Portable Retainer Case with Mirror - Storage Box for Invisible Aligners and Dentures
$16.00
Traditional Rattle Drum Toy for Infants - Old-Style Handheld Bell, Wave Shaker, and Sand Hammer for Newborns Aged 0-1 Year; Suitable for Boys and Girls
$6.90
Low-Temperature Plasma Oil Fume Purifier Electrostatic Ion Module Equipment Rubber Plastic Smoke Treatment Device
$1,600.00
Chunfei Grocery Store - Yun'an GR02 Gravel Bike, Thru-Axle, Disc Brake, Lightweight Touring with Multiple Rack Mounts
$7,977.00
Cashmir Blending Knife Replacement Head Set, Sketch Neony Blending Heads, Sponge Blending Heads, Breathing Cotton for Art Students
$4.34
Natural Amethyst, Rose Quartz, Clear Quartz, and Lemon Quartz Double-Pointed Tumbled Beads for DIY Bracelets, Necklaces, and Earrings
$1.70
Accordion-Style Watercolor Sketchbook, 32k Foldable Blank Paper, 300g Cotton Pulp Fine Texture for Painting, A4 Stamp Collection Travel Journal, DIY Sticker Art Notebook
$9.70
Electric Watercolor Spray Pen Children Hand-painted Color Pa
$52.55
ABB VFD ACS355-01E-09A8-2, Brand New Original 2.2KW/9.8A, Single Phase 220V
$1,919.00
Printmaking Press Machine - Large Format Etching and Woodblock Printer for School Art Classes and Clubs
$583.11
![[2026 New Edition Labor Contract] Social Security New Regulations, Labor Contracts for Individual Businesses, Temporary Workers, Part-Time Staff, Onboarding Registration Forms, Factory Employee Employment Templates, Probationary Period Labor Cooperation and Partnership Agreements](https://www.gosteppe.com/cache/medium/product/388205/legacy-main-5e4718a8989ad3528843f7ce.webp)
