{"product_id":"adam-equipment-astm-0-1mg-50g-calibration-weight-set","title":"Adam Equipment ASTM 0 1mg - 50g Calibration Weight Set, 1mg-50g Range, ASTM Class 0","description":"\u003ch2\u003eAdam Equipment ASTM Class 0 Calibration Weight Set — Ultra-Precision 1mg to 50g for Microbalances\u003c\/h2\u003e\n \u003cp\u003eThe Adam Equipment ASTM Class 0 calibration weight set represents the highest precision tier in the ANSI\/ASTM E617 classification, covering a 1mg to 50g range intended for ultra-sensitive microbalances, semi-microbalances, and primary reference laboratory instruments. Manufactured from highly polished stainless steel at a density of 7.96 g\/cm³, these weights deliver the exceptional accuracy demanded by metrological reference work, pharmaceutical micro-dosing verification, and advanced research applications requiring sub-milligram reference confidence.\u003c\/p\u003e\n \u003ch3\u003eKey Features\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eASTM Class 0 — the highest precision class\u003c\/strong\u003e defined in the ANSI\/ASTM E617 standard\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e1mg to 50g range\u003c\/strong\u003e specifically targeted at microbalance and semi-microbalance calibration requirements\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHighly polished stainless steel at 7.96 g\/cm³\u003c\/strong\u003e maximizes dimensional stability and minimizes air buoyancy correction uncertainty\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUltra-tight mass tolerances\u003c\/strong\u003e for primary reference laboratory and accreditation-level metrological work\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWhite cotton gloves included\u003c\/strong\u003e — critical for preventing mass alteration from fingerprint contamination at this precision level\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndividually finished and inspected\u003c\/strong\u003e to Class 0 specifications with full measurement traceability\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComprehensive 1mg to 50g coverage\u003c\/strong\u003e with denominations appropriate for microbalance span verification\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eDetailed Overview\u003c\/h3\u003e\n \u003cp\u003eASTM Class 0 is the apex of the ANSI\/ASTM E617 weight classification system, specified for calibrating instruments where even microscopic mass differences are significant. The 1mg to 50g range is particularly relevant for microbalances and semi-microbalances where single-milligram reference weights are needed to verify span accuracy at the finest readability level. The 7.96 g\/cm³ material density is chosen specifically to minimize the influence of air buoyancy corrections — a factor that becomes significant in precision measurements at the Class 0 level in standard laboratory atmospheric conditions.\u003c\/p\u003e\n \u003cp\u003eAt this precision tier, proper handling technique is as critical as the weight's manufacturing quality. The included white cotton gloves prevent the transfer of oils, moisture, and particulates from the operator's hands, as even microscopic deposits can measurably alter the mass of the lightest weights in the set. Storage in a controlled environment — stable temperature, low humidity, free from vibration — is strongly recommended to preserve mass values between calibration events and maintain the integrity of the ASTM Class 0 classification throughout the weight's service life.\u003c\/p\u003e\n \u003ch3\u003eApplications\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003ePrimary reference laboratory calibration of microbalances and ultra-microbalances\u003c\/li\u003e\n \u003cli\u003ePharmaceutical micro-dosing formulation and active ingredient balance verification\u003c\/li\u003e\n \u003cli\u003eMetrology institute and accreditation laboratory reference and transfer weight work\u003c\/li\u003e\n \u003cli\u003eSemiconductor and electronics precision component mass measurement\u003c\/li\u003e\n \u003cli\u003eAdvanced materials characterization research requiring sub-milligram reference accuracy\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eWhy Choose the Adam Equipment ASTM Class 0 Set?\u003c\/h3\u003e\n \u003cp\u003eFor laboratories and facilities where no margin of calibration uncertainty is acceptable at the milligram level, the ASTM Class 0 weight set provides the reference accuracy that microbalance verification demands. The highly polished stainless steel construction resists contamination and maintains mass values through a long service life of careful use, while the included gloves support correct handling protocols from the first calibration. This set is the definitive choice when measurement traceability at the highest possible precision level is non-negotiable.\u003c\/p\u003e","brand":"Adam Equipment","offers":[{"title":"Default Title","offer_id":53765875826901,"sku":"ASTM 0 1mg - 50g Calibration Weight Set","price":2941.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/9933\/4869\/files\/astm_0_1mg_-_50g_calibration_weight_set.jpg?v=1778276821","url":"https:\/\/weighcore.com\/products\/adam-equipment-astm-0-1mg-50g-calibration-weight-set","provider":"Weighcore","version":"1.0","type":"link"}