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.
Little Leather Paper Strip Music Box (30-Note) Sheet Music - Contact Before Ordering; Specify Song Email for Digital Score Delivery
$1.00
Kitchen Sink Strainer Basket Push-Type Food Residue Separator Filter Hanging Storage Rack
$3.80
Heavy-Duty Heat-Treated CV Joint Puller Tool - Axle Ball Cage Removal and Installation Device for Automotive Repair
$66.00
Mobile Integrated Waste Transfer Station - 17 Cubic Meters Movable Compression Container
$159,443.00
Antique Glaze White Ceramic Brush Washer Large Brush Washer Water Pot Ink Stone Washing Calligraphy Painting Brush Washing Basin Four Treasures of the Study
$16.80
Authentic Chinese Philosophy Classics: Di Tian Sui, Qiong Tong Bao Jian, San Ming Tong Hui - Annotated & Illustrated Edition
$29.90
Household Disposable Kitchen Sink Garbage Filter Mesh Drain Pool Dishwashing Basin Strainer Vegetable Bowl Leftover Sink
$3.51
Continental Run-Flat Tires: 225/235/245/255/265 45/50/55 R17/R18/R19/R20/R21/R22
$357.00
Foldable Steel Tire Stone Removal Hook - Multi-Tool for Tire Repair, Stone Picking, and Emergency Window Breaking with Storage Bag
$11.70
Integrated Catalytic Combustion Unit RCO Furnace - Exhaust Gas Treatment System with Activated Carbon Adsorption-Desorption and Catalytic Combustion
$231,249.00
Universal Waterproof and Sunproof Cover for E-Bike Charger with Outdoor Storage Box
$11.85
Baohong Paper Brick Watercolor Paper Pad, Medium/Coarse Texture, Square/Round Shapes for Painting, Sketching, and Cotton Pulp Practice
$28.00
Commercial Food Warmer Cabinet for Pies, Youtiao, Burgers, Egg Tarts, and Fried Chicken, Heating and Temperature-Controlled Display Case
$977.00
Masking Tape Spray Paint Shielding Paper for Art Students and Sketching - Non-bleeding, Residue-free, Hand-tearable, Shoe-safe
$1.00
Electric Scooter and Motorcycle Hook - Multi-Functional Storage Hanger for Delivery Bikes and Cargo Boxes
$2.50
Huirui 420AB Fast-Drying Glue for Silicone - Bonds ABS, Stainless Steel, TPE, Rubber; High-Strength Instant Adhesive for Difficult Materials
$36.00
Color Proofing Instrument Ink Mixing Tool Sample Making Machine
$1,860.00
Variable Frequency Drive 0.75kW 2.6A Three-Phase 380V
$1,430.00
2026 Spring PEP New Edition Primary English Grade 3 Volume 2 Four-Line Three-Grid Word Cards for Teachers, Open Class Competition Creative Blackboard Design, Teaching Contest Blackboard Strips and Teaching Aids
$11.30
Cold Brew Yogurt Fermentation Equipment - Manual Old-Style Yogurt Processing and Filling Line
$113,050.00
Electric Spray Painting Pen Set for Babies and Toddlers, Non-Toxic Washable Watercolor Markers, Drawing Tool Kit Toy
$49.50
![[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting](https://www.gosteppe.com/cache/small/product/270133/legacy-main-a12ad5b62abb27a9a45afaf4.png)
[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting
$7.48
Compact Home Range Hood, Portable USB Desktop Smoke Extractor for Living Room Hot Pot and BBQ Odor Removal
$41.00
Office and Home Computer Cable Management Sleeve - Desktop Data Cord Organizer and PC Wire Collector
$6.50
Linear Bearing
$75.47
Thickened Aluminum Alloy Stainless Steel Floor Wire Raceway - Surface-Mounted Cable Cover Protector, Anti-Crush, Self-Adhesive Invisible Design
$2.13
Kids Foam Stamp Brushes - Mushroom-Tipped Painting Set for Kindergarten Art and Graffiti Projects
$2.38
Heisidike HZL-32 Portable Stone Removal Hook for Car Tire Tread Cleaning
$9.28
Bixilage Cheese Processing Equipment – Curd Fermentation Machine for Stretchy Hand-Pulled Cheese Production Line
$67,900.00
Essential Oil Soap Stamping Machine DIY Stamp Maker Semi-Auto Pneumatic Stampler Small Handmade Soap Equipment
$2,173.00
![[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)
