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Upcoming Events
Customer Satisfaction Survey – keep an eye out for a survey coming by email in late November. It will be a short questionnaire designed to gauge our customer satisfaction and how we can improve.
Chromatography Quiz
Chromatography Quiz No. 1: Carbamate Analysis for US EPA 531.1
Special Note: This is the first Quiz included with our newsletter. For each issue, we’ll choose a chromatogram from a different application or industry. So if Carbamates don’t apply to your lab this round, stay tuned! The quizzes and newsletter will be published Quarterly
To Win:
Simply email your answer and your full contact information by December 1st to: Rebecca at rlsmith@pickeringlabs.com
The troubleshooting answer and winner congratulations will be published in the next issue.
Identify the error made when running the Carbamate chromatogram below and win a prize!
Pickering Standard: 1700-0063 Carbamate Test Mix, 2.5 µg/mL, inject 10 µL
Pickering Column: 1846150 Carbamate Column, C18, 4.6 x 150 mm
Normal Operating Conditions (for reference only, condition changes may be reflected in chromatogram):
Column Temperature: 42 °CFlow rate: 1 mL/min
Eluent Gradient:
TIME.......WATER......MeOH %
0.................85.............15
0.5..............85.............15
28.5............30.............70
28.6..............0.............100
33.5..............0.............100
33.6.............85............15
41.................85............15
Post-column conditions for pesticide analysis:
Reagent 1: Hydrolysis reagent CB130
Reagent 2: 100 mg of OPA, 2 g Thiofluor™ in 950 mL of CB910
Reactor 1: 100 °C, 0.5 mL
Reactor 2: ambient. 0.1 mL
Reagent flow rates: 0.3 mL/minDetection: Fluorometer ex 330 nm, em 465 nm
