Office of the Texas State Chemist website

Agricultural Analytical Service

For more information about our lab activities, click here.

Testing on Private Samples: The Office of the Texas State Chemist does not run chemical analysis on private samples. Click here for additional details.
A2LA Accreditioan

Laboratory Personnel



Dr. Kyung-Min Lee

Research Scientist

Office of the Texas State Chemist
kml@otsc.tamu.edu
(979) 845 1121





Dr. Wei Li

Research Scientist

Office of the Texas State Chemist
wei@otsc.tamu.edu
(979) 845 1121





Megan K. Rooney

Senior Manager, Quality Assurance

Office of the Texas State Chemist
mkr@otsc.tamu.edu
(979) 845 1121





Dr. Yi-Cheng (John) Hsieh

Manager, Operations

Office of the Texas State Chemist
Hsieh@otsc.tamu.edu
(979) 845 1121





Inna V. Jaramillo

Analytical Chemist III

Office of the Texas State Chemist
ive@otsc.tamu.edu
(979) 845 1121





Emma L. Gorishek

Analytical Chemist III

Office of the Texas State Chemist
elg@otsc.tamu.edu
(979) 845 1121





Cynthia Bazaldua-Hernandez

Analytical Chemist III

Office of the Texas State Chemist
c1h@otsc.tamu.edu
(979) 845 1121





Cynthia K. McCormick

Analytical Chemist III

Office of the Texas State Chemist
ckm@otsc.tamu.edu
(979) 845 1121





Diamond M. Percivill

Analytical Chemist III

Office of the Texas State Chemist
dmp@otsc.tamu.edu
(979) 845 1121





Cynthia A. Applegate

Analytical Chemist II

Office of the Texas State Chemist
caa@otsc.tamu.edu
(979) 845 1121





Justin G. Hydock

Analytical Chemist II

Office of the Texas State Chemist
jgh@otsc.tamu.edu
(979) 845 1121





Michael A. Olivarez

Analytical Chemist II

Office of the Texas State Chemist
mao@otsc.tamu.edu
(979) 845 1121





Jesse M. Sandoval

Analytical Chemist II

Office of the Texas State Chemist
jsm@otsc.tamu.edu
(979) 845 1121





Cortlan A. Parrish

Analytical Chemist I

Office of the Texas State Chemist
cap@otsc.tamu.edu
(970) 845 1121





Ching-Jung (Amy) Tsai

Analytical Chemist I

Office of the Texas State Chemist
cjt@otsc.tamu.edu
(979) 845 1121