| 11. | This soon resulted in the first commercially available pH meter.
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| 12. | Imported pH meters tended to be unreliable, possibly because of Japan's hot and humid climate.
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| 13. | Rather than buy imported pH meters, Horiba had built his own pH meters for capacitor testing.
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| 14. | Rather than buy imported pH meters, Horiba had built his own pH meters for capacitor testing.
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| 15. | Before wasting more water, test the soil's moisture level with a Moisture, Light & pH Meter.
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| 16. | Before wasting more water, test the soil's moisture level with a Moisture, Light & AMP; pH Meter.
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| 17. | However, the most typical auxostats are pH-auxostats, with feedback between the growth rate and a pH meter.
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| 18. | Beckman had already developed a successful pH meter for measuring acidity of solutions, his company's breakthrough product.
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| 19. | The pH meter is usually calibrated with buffer solutions at known pH values before starting the titration.
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| 20. | Here Shockley struck up a friendship with Arnold Orville Beckman, who had invented the pH meter in 1934.
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