POROMETISTO FT01 Brake Fluid Tester — 8.5" Corrosion‑Resistant Probe, ±0.3% Accuracy

POROMETISTO FT01 is a handheld brake fluid tester that quickly measures water content in DOT3, DOT4 and DOT5.1 fluids using an 8.5-inch corrosion-resistant probe and clear three-color alerts.

The FT01 pairs a calibrated meter with a flexible metal probe so you can check brake fluid quality in cramped master-cylinder reservoirs, calipers, or service lines. Designed for mechanics and DIYers alike, it reports the percentage of water contamination with an accuracy of ±0.3% and a detection window from 0% to 4%. Visual and audible cues make it simple to decide whether fluid is safe, due for replacement, or urgently compromised.

How does the FT01 tell if brake fluid is safe or needs replacing?

The tester measures the electrical properties of brake fluid to estimate water content and displays results with a three-color backlight and buzzer levels. Green means the fluid is acceptable, yellow warns of rising moisture and recommends replacement soon, while red indicates immediate replacement is required.

• Built-in calibration resistor for consistent readings.
• Accuracy up to ±0.3% across 0%–4% detection range.
• Bright green/yellow/red backlights paired with slow/fast buzzer alerts.
• Clear thresholds aligned with common brake fluid safety guidance.

Can I reach tight spots like master cylinders and calipers with the FT01?

Yes — the FT01 includes an 8.5-inch corrosion-resistant metal hose and a high-precision metal probe to access narrow or recessed reservoirs. The flexible probe lets you position the sensor without spilling fluid or disassembling components, making inspections faster and less messy.

• 8.5" corrosion-resistant hose for extended reach.
• Slim metal probe fits into small openings and crevices.
• Probe design eases cleaning and prevents corrosion build-up.
• Useful for both front- and rear-circuit checks without major teardown.

What features help me use the tester in dim shops or roadside conditions?

The FT01 is built for real-world use: it includes a built-in flashlight for low-light work, an auto-off to conserve battery, data-hold to freeze a reading, and a low-battery indicator so you won’t be caught off guard. Those conveniences speed up inspections and reduce repeat checks in poor lighting.

• Integrated flashlight for dark reservoirs and night work.
• Auto shutoff extends battery life between uses.
• Data hold locks a reading for easier documentation or comparisons.
• Low-battery alert prevents unreliable measurements.

How durable and accurate is the FT01 for repeated shop use?

Built with corrosion-resistant components and a high-precision sensor, the FT01 is intended for frequent testing by professionals and hobbyists. The unit’s internal calibration resistor stabilizes output over time, while the metal hose and probe are designed to withstand exposure to brake fluids without rapid degradation.

• Metal probe and corrosion-resistant hose for longer service life.
• Internal calibration ensures repeatable, accurate readings.
• Rated detection accuracy: ±0.3% across the 0%–4% window.
• Comes with two 1.5V batteries and a two-year replacement service option.

Who is this for: The POROMETISTO FT01 suits professional technicians, maintenance shops, and vehicle owners who perform routine brake-system checks. It’s ideal for anyone who needs reliable, portable moisture readings in brake fluid without complex equipment — from DIYers maintaining a daily driver to fleet managers keeping multiple vehicles safe.