J. P. Vyas and Co. Supplies Microprocessor Controlled Analyst for Direct-Reading. J. P. Vyas and Co. Supplies Laboratory Instruments, Equipments, Fabricated Laboratory Glassware, Rare and Research Chemicals, Hospital Furnishings and allied Laboratory requirements. The Microprocessor Controlled Analyst for Direct-Reading provides far greater accuracy and convenience for water testing. Using the latest advances in microprocessor technology, the Analyst provides a direct-reading, user-friendly analysis system for the choice of 90+ water tests.