{"product_id":"gemological-mono-chromatic-light-source-589nm-sodium-wavelength-yellow-led","title":"Gemological Mono-Chromatic Light Source - 589nm Sodium wavelength (Yellow) LED","description":"\u003cp\u003eGemological MonoChromatic Light Source delivers precision illumination at 589nm sodium wavelength (Yellow), the industry standard for refractometer calibration and measurement. This single-LED optical instrument provides consistent, monochromatic light essential for accurate refractive index readings across laboratory and industrial applications.\u003cbr\u003e\u003cbr\u003eEngineered for portability and durability, this compact light source integrates seamlessly with all standard refractometer models. The 589nm wavelength ensures optimal performance in gemology, chemical analysis, and scientific research - wherever precise optical measurement matters.\u003cbr\u003e\u003cbr\u003eLightweight design and straightforward operation make it ideal for field work, laboratory benches, and mobile inspections. A reliable tool for professionals who demand accuracy in optical instrumentation.\u003c\/p\u003e","brand":"Sachi Gems \u0026 Tools Co. Ltd.","offers":[{"title":"Default Title","offer_id":67804033777817,"sku":"GIN025-Single","price":1650.0,"currency_code":"THB","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/4253\/5065\/files\/monochromaticsingle.png?v=1793096295","url":"https:\/\/sachitools.com\/th\/products\/gemological-mono-chromatic-light-source-589nm-sodium-wavelength-yellow-led","provider":"Sachi Gems \u0026 Tools Co. Ltd.","version":"1.0","type":"link"}