Apera Instruments provides scientific electrochemical instruments and sensors for measuring pH, ORP, conductivity, TDS, salinity, dissolved oxygen, turbidity, and ISE with our industry-leading technologies, quality control system, and customer service.
Didn’t have Silver in stock, they emailed me to let me know the deal with the status of my order. Refund was given immediately and my other items were shipped and received sooner than expected. Great customer service.
works well
Picked up a used Twister T6 for $400 and replaced the gear box for $100 and now its like new again.