When paraffin ribbons hit the water and start bunching and folding, every second counts — and imprecise temperature makes it worse. The LW Scientific ReadyWarm Tissue Flotation Bath (FWL-TISS-BTH3) eliminates that variability with a touchscreen PID controller that holds the bath to within fractions of a degree. The LED-lighted, black Teflon-coated interior delivers high contrast so you can see and position every ribbon precisely before mounting — and the compact footprint fits even the most crowded histopathology bench.
Specifications
| Specification | Detail |
|---|---|
| Touchscreen PID temperature control | precise digital setpoint management eliminates guesswork and temperature drift during batch processing |
| LED-illuminated black Teflon (PTFE) interior | high visual contrast between the dark basin and translucent tissue ribbons makes positioning fast and accurate |
| Celsius and Fahrenheit display | switch between units at a glance to accommodate any protocol or international SOP |
| Uniform heat distribution | no hot spots or cool zones that cause uneven paraffin relaxation or distorted sections |
| Compact benchtop footprint | fits on crowded histopathology workstations without displacing other equipment |
| Universal 90–240 VAC power adapter | ready for use in any country without voltage conversion hardware |
| Designed and assembled in Atlanta, Georgia, USA | built under ISO 13485:2016 medical device quality management standards |
Compare the Slide & Fluid Warming Family
| Model | Type | Format |
|---|---|---|
| SWL-14PL-77DP | Digital slide warmer | 14-slide flatbed |
| FWL-04PL-BTD3 | ReadyWarm table warmer | 66-slide flatbed |
| FWL-04PL-WAL3 | ReadyWarm wall fluid warmer | Wall-mount, IV bag shelves |
| FWL-TISS-BTH3 (this model) | Tissue flotation bath | Lighted, touchscreen |
Digital PID control; SWL/FWL warmers Made in USA.
Frequently Asked Questions
What is the temperature range of the FWL-TISS-BTH3, and how accurate is it?
The ReadyWarm Tissue Flotation Bath uses a digital PID touchscreen controller to maintain precise setpoint temperatures suited for paraffin flotation — typically 40–50°C. PID control prevents temperature overshoot and drift, keeping the water stable throughout extended batch processing sessions.
What is the benefit of the black Teflon-coated interior?
The dark, corrosion-resistant PTFE coating provides strong visual contrast against translucent paraffin ribbons floating on the water surface. This makes it significantly easier to see each section and position it precisely onto a slide, reducing errors and increasing throughput.
Can distilled or deionized water be used in this bath?
Yes — distilled or deionized water is recommended to minimize mineral buildup on the Teflon interior. Some protocols also add a small amount of albumin solution or similar adhesive to improve section adhesion to slides.
Is the FWL-TISS-BTH3 compatible with international electrical standards?
The included universal 90–240 VAC adapter allows the unit to be used with standard wall outlets worldwide without a separate voltage converter, making it suitable for international labs and research facilities.
