A chromogenic limulus test for detection of microbes that decreases the laser damage threshold of potassium dihydrogen phosphate crystals
- 1 May 1987
- journal article
- letter
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 61 (9) , 4696-4698
- https://doi.org/10.1063/1.338384
Abstract
The chromogenic limulus test has been applied for the first time to detect an organic impurity contained in potassium dihydrogen phosphate (KDP) crystals. Impurities arise from microbes present during crystal growth, and are responsible for a reduced laser damage threshold. A sensitivity of 10 pg/g KDP (10−5 ppm) was achieved, provided that the KDP solution was neutralized to ∼pH 7. Endotoxin content in the prismatic region of KDP crystals grown in a microbe‐rich solution was approximately 100 pg/g KDP. The presence of an organic material in seemingly perfect KDP crystals could be experimentally confirmed.This publication has 1 reference indexed in Scilit:
- Improvement of the bulk laser damage threshold of potassium dihydrogen phosphate crystals by ultraviolet irradiationApplied Physics Letters, 1986