Description: Growth Technology pH Buffer 4 is used to calibrate your digital pH meter.

Product code: 4016-300

Manufacturer: Growth Technology Ltd.

Description: Growth Technology pH Buffer 4 is used to calibrate your digital pH meter.

Product code: GTPH7-300

Manufacturer: Growth Technology Ltd.

Description: Growth Technology EC Standard 1.413 is used to calibrate your digital EC meter.

Product code: GTEC141-300

Manufacturer: Growth Technology Ltd.

Description: Growth Technology EC Standard 2.76 is used to calibrate your digital EC meter.

Product code: GTEC276-300

Manufacturer: Growth Technology Ltd.