I recently purchased a hand held electronic pH device on ebay for $20. It is called the pH600 and is made by Milwaukee. Chris (cbell) let me borrow his for a few weeks when I just started using a calcium reactor and I couldn't believe how easy it is to use....Just dip and read your pH results in seconds on a digital display.
If interested, just do a search on ebay for pH600. Most "dip & read" electronic pH testers go for $60 + via mail order. For $20 plus shipping, this device is so much cheaper and easier to use than the standard pH test kits on the market. Attached a picture below of the above product.