Silica Source Material Change - Starting IHPAT 237 (April 1, 2024)

Starting IHPAT 237 (April 1, 2024)

Due to the lack of current availability at NIST, our Silica sample generator has switched source material from NIST SRM 1878B to HSE A9950 (which is traceable to NIST SRM 1878A). The certificate of analysis for HSE A9950 is available in the PAT Portal (login required).

Please contact David Clawson with any concerns or questions.