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表面张力仪

Surface Tension Meters

Model No. STM-0001 · Surface Analysis Instruments

Automatic Du Noüy Ring Tensiometer

自动 du Noüy 环法张力仪

Transformer oil, petroleum products and solvent QC still rely on the ring method written into many specifications. This automatic tensiometer pulls a 19.4 mm ring at 0.1–100 mm/min, measuring 1–1000 mN/m with 0.01 mN/m resolution and ±0.1 mN/m accuracy. Huh–Mason and Harkins–Jordan corrections are applied automatically. Samples need 20–50 mL.

Measuring range
1–1000 mN/m
Resolution
0.01 mN/m
Accuracy
±0.1 mN/m
Ring circumference
19.4 mm (standard)
Stage speed
0.1–100 mm/min
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Packing & Shipping

Place of originChina (dispatched from Shanghai)
BrandLiquid International / OEM on request
Export packingFumigation-free plywood case or reinforced carton
Loading portShanghai / Ningbo (others on request)
Payment termsT/T, L/C at sight (confirmed on quotation)
Trade termsEXW, FOB, CFR, CIF, DAP

Typical export terms — final terms are confirmed on the proforma invoice.

Product Description 产品描述

Transformer oil, petroleum products and solvent QC still rely on the ring method written into many specifications. This automatic tensiometer pulls a 19.4 mm ring at 0.1–100 mm/min, measuring 1–1000 mN/m with 0.01 mN/m resolution and ±0.1 mN/m accuracy. Huh–Mason and Harkins–Jordan corrections are applied automatically. Samples need 20–50 mL.

Highlights

  • Automatic ring lift removes operator variation
  • Built-in Huh–Mason and Harkins–Jordan corrections
  • Temperature control 10–90 °C at ±0.1 °C
  • Measures interfacial tension of oils

Applications

  • Petroleum product interfacial tension
  • Transformer oil quality
  • Coating and solvent QC
  • Aqueous solution surface tension

Specifications 技术参数

ParameterValue
Measuring range 测量范围 1–1000 mN/m
Resolution 分辨率 0.01 mN/m
Accuracy 精度 ±0.1 mN/m
Ring circumference 环周长 19.4 mm (standard)
Stage speed 样品台速度 0.1–100 mm/min
Sample volume 样品体积 20–50 mL
Temperature range 温度范围 10–90 °C, ±0.1 °C
Corrections 校正 Huh–Mason, Harkins–Jordan
Interfaces 界面 Liquid–air and liquid–liquid
Display and data 显示与数据 Touchscreen, USB export
Model No.STM-0001
Place of originChina (dispatched from Shanghai)

Applicable standards 适用标准

ISO 304 ASTM D1331 ASTM D971 ASTM D1590 OECD 115

Chinese national standards (GB/T, JJG) and international standards referenced for this product type. Test reports and certificates are supplied with the quotation on request.

Packing & Shipping 包装与运输

Export packing

Fumigation-free plywood case or reinforced carton

Every unit is power-tested before packing; enclosed in shock foam and moisture barrier; wooden cases comply with ISPM 15.

Loading port

Shanghai / Ningbo (others on request)

Full container load (FCL), less-than-container load (LCL) or air freight; complete export documentation provided.

Inquiry Now 索取报价

Complete the form below — an export engineer will send technical configurations and a formal proforma invoice within 24 hours.

Products in this inquiry: Automatic Du Noüy Ring Tensiometer (STM-0001)

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