{"product_id":"ohaus-starter-st400d-g-portable-dissolved-oxygen-do-meter-kit","title":"Ohaus Starter ST400D-G Portable Dissolved Oxygen (DO) Meter Kit","description":"\u003ch2 class=\"text-2xl font-bold mt-1 text-text-100\"\u003eOhaus Starter ST400D-G Portable Dissolved Oxygen (DO) Meter Kit with STDO21 Probe\u003c\/h2\u003e\n\u003cp class=\"whitespace-normal break-words\"\u003e\u003cstrong\u003eAdvanced Optical Technology for Hassle-Free DO Measurement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-normal break-words\"\u003eThe Ohaus Starter ST400D DO (Dissolved Oxygen) Portable Meter delivers high-performance dissolved oxygen measurement with innovative optical technology that eliminates the maintenance hassles of traditional membrane-based DO probes. Leveraging over a century of OHAUS measurement expertise, the ST400D provides immediate, accurate readings without warm-up time or sample preparation, making it the ideal solution for professionals who need reliable DO data in field and laboratory environments. The optical probe technology requires minimal maintenance while delivering consistent accuracy across a measurement range of 0.00 to 20.0 mg\/L (ppm), with precision of ±0.2 mg\/L for readings below 8 mg\/L.\u003c\/p\u003e\n\u003cp class=\"whitespace-normal break-words\"\u003e\u003cstrong\u003eRugged Field-Ready Design with Intelligent Data Management\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-normal break-words\"\u003eDesigned for practical field use, the ST400D features a large backlit color LCD screen that ensures easy readability even in low-light conditions, while the durable IP54-rated ABS housing protects against dust and water splashes. The meter includes convenient accessories such as a meter stand and wrist strap for secure handling during field work. Powered by four AAA batteries providing 12 hours of continuous operation, the ST400D offers automatic temperature compensation with manual salinity adjustment and auto barometric pressure measurement for enhanced accuracy. The built-in 99-measurement memory library stores data for future reference, and one-touch recall of the last calibration data simplifies quality control procedures in the field.\u003c\/p\u003e\n\u003ch3 class=\"whitespace-normal break-words\"\u003eFeatures of Ohaus ST400D Portable (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 class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eOptical DO Technology\u003c\/strong\u003e - Advanced optical sensor eliminates membrane maintenance and provides instant readings without warm-up time or sample preparation.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eLow Maintenance Design\u003c\/strong\u003e - Optical probe requires minimal upkeep compared to traditional electrochemical DO sensors, reducing downtime and operational costs.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eHigh Accuracy Performance\u003c\/strong\u003e - Delivers ±0.2 mg\/L accuracy for readings below 8 mg\/L and ±0.3 mg\/L for 8-20 mg\/L range, with ±0.3°C temperature accuracy.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eLarge Backlit Color LCD\u003c\/strong\u003e - Easy-to-read color graphics display ensures excellent visibility in all lighting conditions, including challenging field environments.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eDurable IP54 Housing\u003c\/strong\u003e - Dust and splash-resistant ABS construction protects the meter during field use in various environmental conditions.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003e99-Measurement Memory\u003c\/strong\u003e - Built-in data storage library allows you to save and review measurement data for documentation and trend analysis.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eOne-Touch Calibration Recall\u003c\/strong\u003e - Quickly access the last calibration data to verify meter performance and maintain quality assurance protocols.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eAutomatic Compensation Features\u003c\/strong\u003e - Auto temperature compensation and auto barometric pressure measurement with manual salinity adjustment ensure accurate DO readings.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003ePortable Battery Operation\u003c\/strong\u003e - Runs on four standard AAA batteries (included) providing 12 hours of continuous use for extended field sessions.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003e\n\u003cstrong\u003eComplete Field Kit\u003c\/strong\u003e - Includes meter stand and wrist strap for secure, hands-free operation during sampling and testing procedures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg height=\"500\" width=\"1000\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Screenshot_2025-10-20_165857.jpg?v=1764209780\"\u003e\u003c\/p\u003e\n\u003ch3\u003eApplications for Ohaus ST400D Portable (DO) Meter:\u003c\/h3\u003e\n\u003cp class=\"whitespace-normal break-words\"\u003eThe Starter ST400D is ideal for:\u003c\/p\u003e\n\u003cul class=\"[\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc space-y-2.5 pl-7\"\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eEnvironmental water quality monitoring.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eAquaculture and fisheries management.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eWastewater treatment process control.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eStream and lake ecological studies.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eLaboratory dissolved oxygen analysis.\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words\"\u003eField research and educational applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOhaus ST400D-G Kit Includes:\u003c\/h3\u003e\n\u003cp\u003eStarter 400D Optical DO Meter, 4 x AAA Batteries, STDO21 Optical DO Probe (RDO), Luminescence Cap\/Sensor Element (required for measurement), Electrode Clip, Wrist Strap, IP54 Protection Seals, and Portable Carrying Bag.\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 1300 812 450\u003c\/p\u003e\n\u003ch4\u003eSpecifications \u003c\/h4\u003e\n\u003ch3\u003eSpecifications for the Ohaus Starter 400D DO Portable Meter\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg height=\"475\" width=\"1000\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Starter_400D_DO_Portable_Meter.jpg?v=1761354142\"\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 ST400D 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 400D Portable DO Meter - Manual PDF\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_400D_Portable_DO_Meter_-_Manual_PDF.pdf?v=1765263179\" target=\"_blank\"\u003e\u003cimg alt=\"Ohaus Starter 400D Portable DO Meter - Manual PDF\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_400D_Portable_DO_Meter_-_Manual_PDF.png?v=1765263178\"\u003eOhaus Starter 400D Portable DO Meter - Manual PDF\u003c\/a\u003e              \u003ca rel=\"noopener\" title=\"Ohaus Starter 400D Portable DO Meter - Datasheet PDF\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_400D_Portable_DO_Meter_-_Datasheet_PDF.pdf?v=1769249060\" target=\"_blank\"\u003e\u003cimg alt=\"Ohaus Starter 400D Portable DO Meter - Datasheet PDF\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_400D_Portable_DO_Meter_-_Datasheet_PDF.png?v=1769249072\"\u003eOhaus Starter 400D Portable DO Meter - Datasheet PDF\u003c\/a\u003e\u003ca rel=\"noopener\" title=\"Ohaus Starter 400D Portable DO Meter - Product Datasheet PDF\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_400D_Portable_DO_Meter_-_Product_Datasheet_PDF.pdf?v=1765263185\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_400D_Portable_DO_Meter_-_Product_Datasheet_PDF.pdf?v=1765263185\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_400D_Portable_DO_Meter_Datasheet_PDF.pdf?v=1761473315\" 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":60767911969138,"sku":"ST400D-G","price":3281.3,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/3497\/4834\/files\/Ohaus_Starter_ST400D_Dissolved_Oxygen_Portable_Meter_with_Open_Stand_and_STDO21_Electrode_Attached_to_Side_of_Meter_Angled_Right_Front_View.jpg?v=1765511301","url":"https:\/\/labdevicesaustralia.com.au\/products\/ohaus-starter-st400d-g-portable-dissolved-oxygen-do-meter-kit","provider":"Lab Devices Australia","version":"1.0","type":"link"}