Wholesale UV300W Bulb Aging Test Chamber with Hot Air Circulation System

We've got a batch of rubber compounds coming in next week that need to be qualified for outdoor exposure, and the old setup just wasn't it for the UV compnent—this HD-E704 handles both thermal aging and UV degradation in one cycle, which saves us form running two separate tests and cross-referencing data that never quite lines up.

The chamber runs a 300W UV bulb with a turntable spinning at 10±2 rpm, so sample exposure is pretty uniform across the shelf boards, and the temperature control is ±3°C with uniformity at ±1°C when you're holding at 100°C, which is tight enough for most of our ASTM D1148 work, though the ambient to 200°C range means our company can push it for some higher-temp yellowing studies too.

It's not ideal for very thin films or samples that degrade quickly below 50°C—the hot air circulation can dry them out faster than you'd want, so we'll stick with the sealed desiccator method for those, but for molded rubber plaques and thick elastomers, this is actually better than the old forced-convection oven we had.

What you get when ordering is the unit itself, 140 kg net weight, with two stainles steel shelf boards—internal chamber is SUS304, so no rust worries at high humidity—and the timer runs up to 999 hours, which is overkill for most of our 48-hour cycles, but we usually have stock on these, though confirm lead time (usually 2-4 weeks) because the 220V, 15A power requirement might need a dedicated circuit in our lab.

The external finish is baking varnish, which holds up fine to lab solvents, and the controller displays temperature to 0.1°C, but honestly, the ±3°C accuracy means we're not splitting hairs at that resolution—basically, it's a workhorse for standard aging tests, not a research-grade instrument.