MEDICAL X-RAY FIXER
Medical Fixer
Medical Fixer is an essential supporting chemical for medical radiographic examination, matched with medical developer to complete full wet film processing. Adopting medical mild low-irritation formula, it reduces harsh odor in closed darkrooms and protects long-term occupational health of radiology staff. It fully fixes blue sensitive and green sensitive medical X-ray films, with three independent formulas to meet manual clinic operation, hospital automatic processor and mixed manual & machine processing demands.
Core Product Advantages
This medical-grade fixer complies with hospital medical safety standards with non-corrosive mild composition. It delivers complete fixing without residual impurities on film base, leaving transparent negatives suitable for long-term medical record archiving. With special anti-crystallization formula, it maintains stable activity under continuous high-temperature machine operation and will not block equipment pipelines. Matched dedicatedly with medical developer, it retains delicate tissue grayscale details to support accurate clinical diagnosis. Sterile powder packaging is supplied to solve overseas liquid transportation limitations.
Basic Technical Specifications
| Parameter Item | Specification Details |
|---|---|
| Raw Material | Medical-grade high-purity reagent, non-toxic, low irritation |
| Concentrated Liquid Appearance | Colorless transparent liquid, no pungent odor |
| Powder Appearance | White crystalline sterile powder |
| Concentrate pH Value | 4.5 ~ 5.5, mild non-corrosive |
| Storage Environment | 10°C ~ 23°C, cool, dry, dark sealed storage |
| Unopened Shelf Life | 24 months |
| Valid Period After Dilution | 1 week |
| Solubility | Fast soluble in pure water, no precipitation, no film residue |
Standard Liquid Packaging Specifications
| Product Type | Packaging Configuration | Total Net Weight Per Carton |
|---|---|---|
| Manual & Universal Large Bottle | 5L/bottle, 2 bottles per carton | 10.8kg |
| High-Temperature Machine Type | 2×5L A liquid + 2×650ml B liquid per carton | 12.1kg |
| Universal Small Bottle | 1L/bottle, 10 bottles per carton | 12.2kg |
Three Standard Fixing Processing Formulas
1. Room Temperature Manual Processing Formula
Mild low-irritation formula designed for small hospitals, clinics and community health centers. Moderate fixing speed, transparent film base after processing for easy long-term film archiving.
| Chemical Product | Dilution Ratio | Temperature | Processing Time |
|---|---|---|---|
| Matched Medical Developer Concentrate | 1:3 (liquid : pure water) | Ambient room temperature | 120 ~ 300 seconds |
| Medical Fixer Concentrate | 1:3 (liquid : pure water) | Ambient room temperature | 120 ~ 300 seconds |
2. High-Temperature Rapid Automatic Machine Formula
Dedicated high-temperature resistant formula for medical automatic film processors, anti-crystallization performance. Supporting stabilizer B liquid slows solution aging and guarantees consistent fixing effect during high-frequency continuous hospital scanning.
| Chemical | Dilution Ratio | Temp Range | Time | Replenishment Volume |
|---|---|---|---|---|
| Machine Medical Developer A Liquid | 1:3 | 20 ~ 38°C | 120 ~ 300s | 300 ~ 450ml per square meter |
| Machine Medical Fixer A Liquid | 1:3 | 20 ~ 38°C | 120 ~ 300s | 300 ~ 450ml per square meter |
Operation Tip: Dilute A liquid with pure water at 1:3 ratio first, then slowly add B liquid under continuous stirring to avoid uneven chemical mixing.
3. Universal Dual-Purpose Formula (Manual & Machine Shared)
Integrated all-in-one formula without extra auxiliary stabilizer liquid, simplifying hospital chemical inventory management. Suitable for general hospitals with mixed processing modes and small-batch clinics. Small 1L portable bottles reduce waste of unused concentrated liquid after opening.
| Chemical | Dilution Ratio | Temp Range | Time | Replenishment Volume |
|---|---|---|---|---|
| Universal Medical Developer | 1:3 | 18 ~ 38°C | 120 ~ 300s | 100 ~ 200ml per square meter |
| Universal Medical Fixer | 1:3 | 18 ~ 38°C | 120 ~ 300s | 100 ~ 200ml per square meter |
Optional Medical Fixer Powder
Sterile medical-grade fixer powder is supplied for overseas medical institutions restricted by liquid dangerous goods transportation rules. It complies with global medical hygiene standards, lowers logistics weight and simplifies customs clearance. Same fixing performance as liquid concentrate after on-site mixing with pure water. Standard packaging: 1kg per independent sterile bag, 10 bags per carton.
Storage & Operation Safety Precautions
Medical fixer must be stored separately in dedicated darkroom cabinets, completely isolated from medical developer to prevent cross-contamination and chemical reaction. Seal concentrated liquid tightly and store in cool dark environment. Only pure water can be used for dilution to guarantee stable fixing effect.
All liquid preparation and film fixing work must be operated in ventilated space. Operators shall wear complete medical protective gloves and goggles to avoid direct skin and eye contact with concentrated reagent.
Darkroom safelight standard: Adopt 15W frosted bulb with deep red filter, keep light source at least 1.2 meters away from film stock to prevent light fog and defective diagnostic negatives.
Frequently Asked Questions
Q1: Can medical fixer and industrial fixer be used interchangeably?
A: Interchange use is prohibited. Medical fixer adopts mild low-corrosion formula meeting medical hygiene standards; industrial fixer features high concentration and strong corrosivity, which will damage medical film and fail clinical diagnostic standards.
Q2: What risks will occur if diluted fixer exceeds its valid period?
A: Expired diluted fixer will breed bacteria, leading to yellowed film base, faded images and inaccurate diagnosis. Prepare appropriate amount of working liquid according to daily usage to avoid waste and quality risks.
Q3: Is there performance difference between small-bottle and 5L large-bottle medical fixer?
A: Formula, fixing performance and final imaging effect are fully consistent. The only difference is single bottle capacity; small packaging is designed for small clinics with low daily consumption to reduce reagent waste.
