Level 1 Water Washable Fluorescent Penetrant
A water-removeable Level 1 penetrant, ZL-19 is designed for use on rough or unmachined surfaces such as castings and forgings to find larger discontinuities in non-safety critical components. It is ideal for inspecting automotive and general industrial components such as engine cylinder blocks, power train components, rocker arms, pistons, steering knuckles, etc.
ZL-19 washes off parts with ease, leaving less background for clearer indications – even on rough surfaces. The quick rinsing reduces water usage in the inspection process, and the rinse water is easily treatable for simpler disposal.
This economical fluorescent penetrant helps users reduce their over-all cost per part by reducing penetrant loss through drag-out, speeding up the washing and inspection process, and cutting rinse water costs.
ZL-19 can be used with ZP-4B dry powder developer, with ZP-5B water suspendible developer in an agitated tank or with ZP-9F non-aqueous developer. With a UV-A light source, indications will appear as a bright green-yellow fluorescence.
ZL-19 is listed on the QPL SAE AMS 2644 Qualified Product List and is approved for use by Pratt & Whitney.
Container Size & Part Number
5 gal / 18.9 L pail 01-3263-40
55 gal / 208 L drum 01-3263-45
Defect location: open to surface
- Rough surface finish
- Unmachined parts
- Engine cylinder blocks
- Power train components
- Rocker arms
- Steering knuckles
- Automated penetrant lines
- Cold shuts
- Hot tears
NDT Method: Fluorescent Penetrant Testing
Type: Type 1
Methods: Method A or Method C
Sensitivity Level: Level 1, low sensitivity
Required Equipment: UV light source, like the EV6000
Temperature Range: 40 to 125°F / 4 to 52°C