SPER Scientific Test Tube pH Pen Flat

Fits standard test tubes 16 x 50 mm or larger.
Highly stable and accurate readings with a large LCD display. Designed for simple one-hand operation. Automatically calibrates to pH 4, 7 and 10 buffers and can be adjusted to recognize some other non-standard buffers as well. Features hold function, and auto power off with low battery indicator.

• General Purpose
  
• Glass Probe: EPA compliant for labs and wine
  
• Penetration Probe:for food & soil
  
• Flat Tip Probe:for meat, leather, paper, skin, and other surface pH measurements

Dimensions: 9" × 1⅜" × 1" (225 × 35 × 20 mm)
Weight: 2.3 oz (66 g)<