Hello Mine name is Armando Davids and I'm from the Quality Components in the Netherlands. Quality Components is a company that makes controllers for the hydroponics industry. We are looking for a low budget pt 100 probe for our new PH and conductivity controller. We are looking if your company can help us with your best price for + 400 pieces a year to start with. If your company can offer us a low budget price for PH and conductivity probes we will appreciate that. If you don't have low budget price can you recommend me one that has it well. The range for HP = 3 till 8 PH for conductivity is 0,000 till 3,000 ms and for the PT 100 from 5 till 40 degrees C. Thanks in advance. Armando Davids Quality xxxxx netherlands xxxxx