Small Indicators
A Safer World
Class 4 Steam Indicator Strip
Inside Every Pack. Every Cycle.
Type 4 multi-variable chemical indicator strip for steam sterilization. Placed inside every pack, it responds to steam, time and temperature and changes from yellow to black when the critical parameters are reached.
- In Stock
- Global Supply
- Trusted Quality
- OEM/ODM
- Indicator Type
- ISO 11140-1 Type 4 multi-variable indicator
- Strip Size
- 15 mm × 85 mm
- Packing
- 200 strips per box
- Sterilization Method
- Saturated steam — 121 °C / 20 min or 134 °C / 4 min
Product Overview
Class 4 steam indicator strips are placed inside each pack, tray or container to confirm that the sterilant reached the contents. The indicator ink monitors all critical steam sterilization parameters — steam, time and temperature — and changes from yellow to black when the stated values are achieved.
The strip guards against incomplete steam penetration, the presence of non-condensable gases or excess air, and inadequate temperature or exposure time. A pre-printed reference colour allows rapid, unambiguous interpretation, and the indicator dot at the distal end permits a secure sterile presentation.
Key Specifications
| Product Name | Class 4 / Type 4 Chemical Steam Indicator Strip |
|---|---|
| Indicator Type | ISO 11140-1 Type 4 multi-variable indicator |
| Strip Size | 15 mm × 85 mm |
| Packing | 200 strips per box |
| Sterilization Method | Saturated steam — 121 °C / 20 min or 134 °C / 4 min |
| Variables Monitored | Steam, time and temperature |
| Colour Change | Yellow → black (reference colour printed on strip) |
| Ink Characteristics | Lead-free, non-toxic, non-bleeding; no migration into the pack |
| Compliance | ISO 11140-1 Type 4, manufactured under ISO 13485; CE |
| Shelf Life | 3 years from date of manufacture |
| Storage Conditions | Store at 15–30 °C, < 60 % RH, away from sterilants and direct light |
Clear Change
Easy to Use
Trusted by Professionals
Features & Benefits
- Multi-variable (Type 4)
- Yellow → black
- Reference colour printed
- Non-bleeding ink
- Pack control
How to use
- Place one strip inside each pack, in the area most difficult for steam to reach (usually the centre).
- Sterilize at 121 °C for 20 minutes or 134 °C for 4 minutes.
- At the point of use, open the pack and compare the strip with the printed reference colour. Do not use the contents if the colour change is incomplete.
Applications
Hospital CSSDs, surgical instrument packs, dental clinics, veterinary hospitals, biological laboratories and mushroom / substrate sterilization.
Packaging & Shipping
| Strip size | Packing | Boxes / carton | Carton size (mm) |
|---|---|---|---|
| 15 × 85 mm | 200 strips/box | 100 | 400 × 300 × 250 |
- Export cartons with lot number and expiry date printed; palletised on request.
- Sea, air or express — EXW, FOB, CIF or DDP terms. Standard products ship in 7–15 working days.
- Custom sizes, printing and private-label packaging available for OEM/ODM orders.
Quality Assurance
- ISO 13485Quality Management System for Medical Devices
- ISO 11140Chemical Indicators for Sterilization Processes
- CECompliant with EU Requirements
- Batch traceabilityEvery carton carries a lot number linked to raw-material and inspection records
- Incoming & final inspectionMaterials and finished goods tested before release
Learn more about our quality system · Certificates and test reports are available on request.
Frequently Asked Questions
Where should the strip be placed inside the pack?
In the geometric centre of the pack or in the location hardest for steam to reach, such as the middle of a folded linen pack or the bottom of a dense instrument tray.
What is the difference between a Type 4 and a Type 5 indicator?
A Type 4 indicator reacts to two or more critical variables. A Type 5 integrating indicator reacts to all critical variables and its performance is correlated to a biological indicator, making it the most demanding chemical indicator for pack control.
