THEODORE KETTLER
Pilots at Smt Ln, Ridgefield, CT
License number
Connecticut A1010437
Issued Date
Oct 2015
Expiration Date
Oct 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
26 Summit Ln, Ridgefield, CT 06877
Professional information
Gradient Generation Control For Large Scale Liquid Chromatography
US Patent:
5089124, Feb 18, 1992
Filed:
Jul 18, 1990
Appl. No.:
7/554301
Inventors:
Jeffrey T. Mahar - New Haven CT
Thomas C. Ransohoff - Fairfield CT
Adam H. Levin - Brookfield CT
Theodore Kettler - Ridgefield CT
Thomas C. Ransohoff - Fairfield CT
Adam H. Levin - Brookfield CT
Theodore Kettler - Ridgefield CT
Assignee:
Biotage Inc. - Charlottesville VA
International Classification:
B01D 1508
US Classification:
2101982
Abstract:
Precise gradient control is accomplished using a high flow three-way valve, appropriate mixing, and precise metering control. Gradient elution profiles are generated for flow rates above 100 ml/min. Control involves precise selection of two solvents, and correction factors for valve lag times and pump/valve synchronizations. The gradient is controlled simultaneously with other non-timed operations through a single microprocessor controller.