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Orion Star™ A221 Portable pH Meter Thermo Scientific™

Record accurate and reliable pH, mV, ORP and temperature measurements with the Thermo Scientific™ Orion Star™ A221 Portable pH Meter. This meter is ideal for a wide range of applications and advanced pH analysis in the field.

Orion Star™ A121 Portable pH Meter Thermo Scientific™

Take simple, routine pH, mV and temperature measurements with the Thermo Scientific™ Orion Star™ A121 Portable pH Meter. This meter is an easy-to-use and budget-friendly instrument for basic pH analysis in the field.

Elite pH Pocket Testers and Replacement Sensors Thermo Scientific™

Benefit from these pocket-sized testers. Thermo Scientific™ Elite testers are designed to provide on-the-go measurements for a variety of applications including homebrew beer and wine, food and beverage, hydroponics, aquaculture and aquariums, agriculture, pools and spas, environmental monitoring,...

Waterproof pH Meter Thermo Scientific™

This Thermo Scientific brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific.

Elite ORP Pocket Testers and Replacement Sensors Thermo Scientific™

pH & ORP Meters

Whether you're looking for a simple pH meter on a budget, or a powerful pH meter that simultaneously measures other parameters, our pH meters are designed to help you tackle even the most complex pH measurements with confidence.

Electrode Filling Solutions

Use Thermo Scientific™ Orion™ pH Electrode Filling Solution with pH electrodes and reference electrodes. Packaged as five 2 oz. (5 x 60mL) bottles. Orion Solutions, Standards and Buffers Overview Download Brochure, pH and ORP Buffers & Solutions pH Buffers & ORP Standards, Electrode Storage &...

Manual / Product Insert

Orion Star A111 Benchtop and Star A121 Portable pH Meters

Manual / Product Insert

Orion Star A111 Benchtop & Star A121 Portable pH Meters Instruction Sheet [EN]