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thanks to its excellent properties
Melde’s experiment is ideal to study the behavior of standing waves
(15 x N Blue Ball 5 Holes)
Ideal for Various Activities: Perfect for marking obstacle courses
Digital PH Meter (0.01PH / 0.00~14.00PH) thanks to its excellent propertiesIncludes: Portable PH meter kit with a case and instruction manual. The body uses HD display images and clear buttons. Electrode probe: imported high precision sensitive probe, more stable measurement. Displays PH value and thermometer at the same time for on site or field operation. Suitable for tap water source monitoring, aquaculture, environmental protection and for the determination of water quality. Premium Quality: This item is made of high
