{"product_id":"ohaus-starter-st300d-g-portable-dissolved-oxygen-do-meter-kit","title":"Ohaus Starter ST300D-G Portable Dissolved Oxygen (DO) Meter Kit","description":"\u003ch2 class=\"text-2xl font-bold mt-1 text-text-100\"\u003eOhaus Starter ST300D-G Portable Dissolved Oxygen (DO) Meter Kit with STDO11 \u0026amp; SSTEMP30 Probes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eInstant-On Galvanic Technology for Rapid DO Measurement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Ohaus Starter ST300D DO (Dissolved Oxygen) Portable Meter brings over a century of OHAUS measurement precision to portable dissolved oxygen analysis, offering convenience, reliability, and durability in one compact design that adapts to wherever your work takes you. Featuring an advanced galvanic electrode that can be used immediately after being powered on, the ST300D eliminates the typical warm-up wait time associated with traditional dissolved oxygen meters, allowing you to begin testing instantly and maximize productivity in the field. This innovative electrode technology provides accurate DO measurements across a comprehensive range from 0.00 to 45.0 mg\/L (ppm) and 0 to 400% saturation with ±1% accuracy, making it suitable for a wide variety of aquatic environments from oxygen-depleted waters to supersaturated conditions. The durable IP54-rated ABS housing protects the meter from dust and water splashes during field operations, while the included wrist strap and meter stand ensure secure handling during sample collection. Powered by four standard AAA batteries that deliver an impressive 250 hours of continuous operation, the ST300D provides extended field performance without the interruption of frequent battery changes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUser-Friendly Design with Intelligent Temperature Compensation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEngineered for straightforward operation without compromising measurement quality, the ST300D combines a simple calibration process with automatic temperature compensation to deliver fast, accurate results in real-world field conditions. The integrated 30 KΩ NTC temperature sensor monitors sample temperature from 0 to 50°C with ±0.3°C accuracy, automatically adjusting DO readings to compensate for temperature effects and ensuring reliable measurements across varying environmental conditions. The clear LCD display presents all measurement data including DO concentration in multiple units (mg\/L, ppm, or % saturation) and temperature in an easy-to-read format, allowing operators to quickly assess water quality parameters at a glance. For efficient data management and quality control verification, the 30-measurement memory library stores critical readings for future reference and regulatory documentation, while the convenient one-touch recall function allows users to instantly access the last calibration data to verify meter performance and maintain measurement confidence throughout extended field sessions. The two-point calibration capability ensures optimal accuracy across your specific operating range, making the ST300D an ideal choice for environmental monitoring, aquaculture management, wastewater treatment, stream studies, and educational applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures of Ohaus ST300D (DO) Meter:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne Year Warranty \u003c\/strong\u003efor piece of mind.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstant-On Galvanic Electrode\u003c\/strong\u003e - Advanced galvanic technology enables immediate measurements after power-on without warm-up time, maximizing field productivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Measurement Range\u003c\/strong\u003e - Measures DO from 0.00 to 45.0 mg\/L (ppm) and 0 to 400% saturation for diverse aquatic environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Battery Life\u003c\/strong\u003e - Operates for 250 hours on four AAA batteries, providing reliable long-term field performance without frequent battery changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Accuracy Performance\u003c\/strong\u003e - Delivers ±1% DO accuracy and ±0.3 mg\/L precision with ±0.3°C temperature accuracy for dependable results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Temperature Compensation\u003c\/strong\u003e - Built-in 30 KΩ NTC temperature sensor ensures accurate DO readings across varying sample temperatures from 0 to 50°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Display Units\u003c\/strong\u003e - View DO measurements in mg\/L, ppm, or % saturation formats to match your specific application requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-Point Calibration\u003c\/strong\u003e - Flexible calibration options optimize accuracy across your specific operating range for enhanced measurement reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP54 Durable Housing\u003c\/strong\u003e - Dust and splash-resistant ABS construction protects the meter during field operations in challenging environmental conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30-Measurement Memory\u003c\/strong\u003e - Built-in data storage allows you to save and review measurement data for documentation, quality control, and regulatory compliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Touch Calibration Recall\u003c\/strong\u003e - Quickly access the last calibration data to verify meter performance and maintain measurement confidence in the field.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cimg height=\"488\" width=\"1000\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Screenshot_2025-10-20_171008.jpg?v=1764204601\"\u003e\u003c\/h3\u003e\n\u003ch3\u003eApplications for Ohaus ST300D (DO) Meter:\u003c\/h3\u003e\n\u003cp\u003eThe Starter ST300D is ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnvironmental water quality monitoring.\u003c\/li\u003e\n\u003cli\u003eAquaculture and fisheries management.\u003c\/li\u003e\n\u003cli\u003eWastewater treatment process control.\u003c\/li\u003e\n\u003cli\u003eStream and lake ecological studies.\u003c\/li\u003e\n\u003cli\u003eLaboratory dissolved oxygen analysis.\u003c\/li\u003e\n\u003cli\u003eField research and educational applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOhaus ST300D-G Kit Includes:\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-39 citation-end-39\"\u003eST300D DO Meter, 4 x AAA Batteries, STDO11 Galvanic DO Electrode, STTEMP30 Temperature Probe, IP54 Protection Seals (1 set), Electrode Clip, Wrist Strap, and Portable Carrying Bag.\u003csup class=\"superscript\" data-turn-source-index=\"1\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"citation-39 citation-end-39\"\u003e\u003cem\u003e\u003cb\u003eNote on Calibration:\u003c\/b\u003e\u003c\/em\u003e The ST300D requires Zero Oxygen Chemicals for 0% calibration. Please ensure you purchase OHAUS Zero Oxygen Chemicals (Part No. 30059257) separately to perform two-point calibration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Logo_1_Year_Warranty.jpg?v=1769231718\" alt=\"Ohaus Logo \u0026amp; 1 Year Warranty\" width=\"700\" height=\"133\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed Help?\u003c\/strong\u003e Call \u003ca title=\"Need Help? Call 1300 812 450\" href=\"tel:1300812450\"\u003e1300 812 450\u003c\/a\u003e\u003c\/p\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ch3\u003eSpecifications for the Ohaus Starter 300D-G DO Portable Meter\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg height=\"693\" width=\"700\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Starter_300D_Do_Portable_Meter.jpg?v=1761354987\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Logo_1_Year_Warranty.jpg?v=1769231718\" alt=\"Ohaus Logo \u0026amp; 1 Year Warranty\" width=\"700\" height=\"133\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed Help?\u003c\/strong\u003e Call \u003ca title=\"Need Help? Call 1300 812 450\" href=\"tel:1300812450\"\u003e1300 812 450\u003c\/a\u003e\u003c\/p\u003e\n\u003ch4\u003eDownloads\u003c\/h4\u003e\n\u003ch3\u003eOhaus Starter ST300D Portable DO Meter Manual \u003c\/h3\u003e\n\u003cp\u003e  Owner's Manual                                                                                               Product Datasheet\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Ohaus Starter 300D Portable DO Meter - Manual PDF\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_300D_Portable_DO_Meter_-_Manual_PDF.pdf?v=1765264997\" target=\"_blank\"\u003e\u003cimg alt=\"Ohaus Starter 300D Portable DO Meter - Manual PDF\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_300D_Portable_DO_Meter_-_Manual_PDF.png?v=1765264997\"\u003eOhaus Starter 300D Portable DO Meter - Manual PDF\u003c\/a\u003e          \u003ca rel=\"noopener\" title=\"Ohaus Starter 300D Portable DO Meter - Product Datasheet PDF\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_300D_Portable_DO_Meter_-_Product_Datasheet_PDF.pdf?v=1765264997\" target=\"_blank\"\u003e\u003cimg alt=\"Ohaus Starter 300D Portable DO Meter - Product Datasheet PDF\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_300D_Portable_DO_Meter_-_Product_Datasheet_PDF.png?v=1765264997\"\u003eOhaus Starter 300D Portable DO Meter - Product Datasheet PDF\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_300D_Portable_DO_Meter_Datasheet_PDF.pdf?v=1761473308\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e  Product Brochure\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Ohaus Water Analysis and Electrodes - Brochure PDF\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Water_Analysis_and_Electrodes_-_Brochure_PDF.pdf?v=1766567613\" target=\"_blank\"\u003e\u003cimg alt=\"Ohaus Water Analysis and Electrodes - Brochure PDF\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Water_Analysis_and_Electrodes_-_Brochure_PDF.png?v=1766567590\"\u003eOhaus Water Analysis and Electrodes - Brochure PDF\u003c\/a\u003e\u003c\/p\u003e","brand":"OHAUS","offers":[{"title":"Default Title","offer_id":60767935660402,"sku":"ST300D-G","price":1681.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_ST300D_Dissolved_Oxygen_Portable_Meter_with_Open_Stand_and_STDO11_Probe_Attached_to_Side_of_Meter_Angled_Right_Front_Left_Side_View.jpg?v=1765513416","url":"https:\/\/labdevicesaustralia.com.au\/products\/ohaus-starter-st300d-g-portable-dissolved-oxygen-do-meter-kit","provider":"Lab Devices Australia","version":"1.0","type":"link"}