{"product_id":"portable-ph-meter-qty-1","title":"Portable PH meter Qty 1","description":"\u003cp class=\"p1\"\u003e\u003cmeta charset=\"utf-8\"\u003eElectronic Instruments Ltd. Portable pH Meter, Model 30, Richmond, Surrey, England. A laboratory instrument designed for the measurement of acidity and alkalinity (pH) in chemical, biological, and industrial samples. The unit features a large analogue meter calibrated for pH and millivolt readings, with controls for temperature compensation, buffer calibration, and zero adjustment. The instrument would originally have been used with a glass electrode and reference electrode mounted in the storage compartment within the case lid. Used in universities, water analysis, brewing, and chemical laboratories. c.1940s–1950s.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eW36 x D17 x H29 cm.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eReplacement value £200\u003c\/p\u003e","brand":"Electronic Instruments Ltd","offers":[{"title":"Default Title","offer_id":53162478993747,"sku":"POR-791","price":20.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/8674\/0307\/files\/portable_PH_meter_electrical_scientific_Industrial_powerhouse_props_prop_rental_hire_vintage_movie_film_set_dec.jpg?v=1772613429","url":"https:\/\/powerhouseprops.co.uk\/products\/portable-ph-meter-qty-1","provider":"Powerhouse Props","version":"1.0","type":"link"}