{"componentType":"manufacturer","data":{"id":170008960,"name":"H. \u0026 K. Starke\u200B","description":"\u003Cp\u003E\u003Ca href=\u0022https://starke-laborbedarf.de/\u0022 target=\u0022_blank\u0022 rel=\u0022noopener\u0022\u003EH. \u0026 K. Starke GmbH\u003C/a\u003E is a distinguished German manufacturer specializing in the production of high-precision laboratory glassware and specialized apparatus for sample preparation. Based in Schw\u0026auml;bisch Hall, Germany, the company has established itself as a premier authority in the fabrication of technical glass instruments that meet stringent international testing standards. Their mission is centered on providing \u0022Precision in Glass,\u0022 ensuring that every instrument\u2014from specialized centrifuge tubes to complex distillation components\u2014offers the structural integrity and measurement accuracy required for sensitive analytical work. H. \u0026 K. Starke is particularly renowned for its expertise in manufacturing glassware that complies with specific ASTM, DIN, and ISO protocols, making them a vital partner for laboratories in the petrochemical, environmental, and wastewater treatment sectors who require validated hardware for regulatory compliance.\u003C/p\u003E\u003Cp\u003E\u0026nbsp;\u003C/p\u003E\u003Cp\u003EThe H. \u0026 K. Starke range at LabFriend features professional \u003Ca href=\u0022/distillation-separation-filtration\u0022\u003Edistillation, separation, and filtration\u003C/a\u003E solutions, headlined by their high-performance ASTM centrifuge tubes. Available in cylindrical, pear-shaped, and conical designs, these tubes are manufactured from premium borosilicate glass 3.3 to withstand high centrifugal forces and chemical stress. For environmental monitoring, the brand provides advanced \u003Ca href=\u0022/environmental-soil-water-food-analysis\u0022\u003Eenvironmental analysis\u003C/a\u003E tools, including the industry-standard Winkler-type oxygen bottles and Duran Imhoff sedimentation cones for water quality testing. Their portfolio also includes specialized \u003Ca href=\u0022/analytical-measurement-and-testing\u0022\u003Eanalytical measurement\u003C/a\u003E aids such as overflow measuring flasks and precision weighing scoops. To support industrial workflows, Starke offers glassware designed specifically for oil and fuel analysis according to ASTM D96 and D91 standards. By choosing H. \u0026 K. Starke through LabFriend, you benefit from \u003Cstrong\u003Ecompetitive pricing\u003C/strong\u003E and \u003Cstrong\u003Efast shipping\u003C/strong\u003E on German-engineered glassware designed for analytical precision and safety.\u003C/p\u003E\u003Cp\u003E\u0026nbsp;\u003C/p\u003E\u003Ch2\u003EWhy Choose H. \u0026 K. Starke for Your Laboratory?\u003C/h2\u003E\u003Cul\u003E\u003Cli\u003E\u003Cstrong\u003EASTM Standard Compliance\u003C/strong\u003E: Their specialized centrifuge tubes are manufactured to exact ASTM specifications, ensuring they fit standard rotors and meet the strict requirements of petroleum and chemical testing.\u003C/li\u003E\u003Cli\u003E\u003Cstrong\u003EHigh-Grade Borosilicate 3.3\u003C/strong\u003E: Utilizes premium glass with a low coefficient of thermal expansion, providing excellent resistance to thermal shock and aggressive chemical reagents.\u003C/li\u003E\u003Cli\u003E\u003Cstrong\u003ESpecialists in Water Analysis\u003C/strong\u003E: Offers the definitive equipment for sedimentation and dissolved oxygen testing, trusted by municipal and industrial wastewater laboratories worldwide.\u003C/li\u003E\u003Cli\u003E\u003Cstrong\u003EDurable \u0026 Permanent Markings\u003C/strong\u003E: Features high-contrast blue or white enamel graduations that are fired onto the glass, ensuring long-term legibility even after repeated cleaning and autoclaving.\u003C/li\u003E\u003Cli\u003E\u003Cstrong\u003EGerman Engineering Heritage\u003C/strong\u003E: Combines traditional glassblowing craftsmanship with modern manufacturing technology to produce instruments with superior wall thickness and durability.\u003C/li\u003E\u003C/ul\u003E\u003Cp\u003E\u0026nbsp;\u003C/p\u003E\u003Ch2\u003EFrequently Asked Questions\u003C/h2\u003E\u003Cp\u003E\u003Cstrong\u003E1. What is the maximum RCF for H. \u0026 K. Starke ASTM centrifuge tubes?\u003C/strong\u003E\u003Cbr /\u003EStandard H. \u0026 K. Starke ASTM centrifuge tubes (100 mL) are generally resilient up to 700 x g RCF, depending on the specific model and rotor fitment.\u003C/p\u003E\u003Cp\u003E\u0026nbsp;\u003C/p\u003E\u003Cp\u003E\u003Cstrong\u003E2. Why is the Winkler-type bottle used for oxygen determination?\u003C/strong\u003E\u003Cbr /\u003EThe Winkler bottle is specifically designed with a precision-ground glass stopper to prevent air bubbles from being trapped, ensuring that the dissolved oxygen measurement in water samples is not skewed by atmospheric oxygen.\u003C/p\u003E\u003Cp\u003E\u0026nbsp;\u003C/p\u003E\u003Cp\u003E\u003Cstrong\u003E3. Are the Imhoff sedimentation cones available with stopcocks?\u003C/strong\u003E\u003Cbr /\u003EYes, H. \u0026 K. Starke provides Imhoff cones in both \u0022without stopcock\u0022 designs for standard sedimentation and \u0022with stopcock\u0022 models for easier drainage of settled solids.\u003C/p\u003E\u003Cp\u003E\u0026nbsp;\u003C/p\u003E\u003Cp\u003E\u003Cstrong\u003E4. Can I use H. \u0026 K. Starke glassware in a muffle furnace?\u003C/strong\u003E\u003Cbr /\u003EWhile borosilicate 3.3 is highly heat-resistant (typically up to 500\u0026deg;C for short periods), it is not intended for the extreme temperatures of a muffle furnace. For such applications, quartz or porcelain labware is recommended.\u003C/p\u003E","metaKeywords":"H. \u0026 K. Starke, Starke Laborbedarf, ASTM centrifuge tubes, sedimentation cones, Winkler oxygen bottles, Imhoff cones, laboratory glassware, sample preparation, environmental analysis","metaDescription":"Optimize your sample prep with H. \u0026 K. Starke. Specialists in ASTM centrifuge tubes, Imhoff cones, and Winkler bottles. Shop at LabFriend for fast shipping and top prices.","metaTitle":"H. \u0026 K. Starke | Precision Glassware for Sample Preparation \u0026 Analysis","seName":"h-k-starke-gmbh","image":{"imageUrl":null,"thumbImageUrl":null,"fullSizeImageUrl":null,"title":"Show products manufactured by H. \u0026 K. Starke GmbH","alternateText":"Picture for manufacturer H. \u0026 K. Starke GmbH","customProperties":{}},"storeSeoData":[{"storeId":12,"seoName":"h-k-starke-gmbh","isDefault":false},{"storeId":1,"seoName":"h-k-starke","isDefault":true},{"storeId":6,"seoName":"h-k-starke","isDefault":false},{"storeId":4,"seoName":"h-k-starke","isDefault":false},{"storeId":14,"seoName":"h-k-starke","isDefault":false},{"storeId":3,"seoName":"h-k-starke","isDefault":false},{"storeId":13,"seoName":"h-k-starke","isDefault":false},{"storeId":18,"seoName":"h-k-starke","isDefault":false}]},"title":"H. \u0026 K. Starke\u200B"}