The High Temperature Probe (HTP), or “slag probe”, is a temperature controlled, thermo-coupled specialized alloy furnace probe that replicates heat transfer, or boiler tube surfaces to characterize high temperature deposit formation within a local region in the furnace. The objective of this in-situ test is to evaluate slagging conditions in various regions of the boiler and to quantify performance of a treatment program. This diagnostic tool enables EES to establish optimal product feed rate(s) in an economical manner and provides product performance results.

Time and temperature data from the HTP test is recorded and analyzed to benchmark the rate of deposition trends, which will vary greatly with dosage level, fuel quality, and operating conditions. Deposits that are collected on the HTP are photographed and removed for lab testing. The lab testing is customized based on the objectives of the program, but typically includes an ash composition analysis as well as fusion temperature analysis.