Model No. PLR-0001
Automatic Polarimeter自动旋光仪
- Measurement scale
- ±90° optical rotation
- Resolution
- 0.001°
折光仪
Refractometers
Photo for reference; configuration may vary by order.
Model No. RFR-0005 · Optical Instruments
Gem Refractometer
宝石折光仪
Gemmologists and jewellery appraisers separate stones and simulants by refractive index and birefringence. This gem refractometer reads 1.30–1.81 nD on a 0.01 nD graduated scale with ±0.002 nD accuracy, using a high-index glass prism and 1.81 contact liquid. A polarizing filter is built into the eyepiece. Choose a monochromatic LED or sodium lamp.
- Measurement range
- 1.30–1.81 nD
- Accuracy
- ±0.002 nD
- Reference wavelength
- 589 nm
- Light source
- Monochromatic LED or sodium lamp
- Contact liquid index
- 1.81
Packing & Shipping
| Place of origin | China (dispatched from Shanghai) |
|---|---|
| Brand | Liquid International / OEM on request |
| Export packing | Fumigation-free plywood case or reinforced carton |
| Loading port | Shanghai / Ningbo (others on request) |
| Payment terms | T/T, L/C at sight (confirmed on quotation) |
| Trade terms | EXW, FOB, CFR, CIF, DAP |
Typical export terms — final terms are confirmed on the proforma invoice.
Product Description 产品描述
Gemmologists and jewellery appraisers separate stones and simulants by refractive index and birefringence. This gem refractometer reads 1.30–1.81 nD on a 0.01 nD graduated scale with ±0.002 nD accuracy, using a high-index glass prism and 1.81 contact liquid. A polarizing filter is built into the eyepiece. Choose a monochromatic LED or sodium lamp.
Highlights
- Range 1.30–1.81 nD covers most gemstones
- Polarizing filter built into the eyepiece
- High-index glass prism
- Monochromatic LED or sodium illumination
Applications
- Gemstone identification and verification
- Jewellery trade and appraisal testing
- Diamond simulant differentiation
- Teaching and gemmological research
Specifications 技术参数
| Parameter | Value |
|---|---|
| Measurement range 测量范围 | 1.30–1.81 nD |
| Accuracy 准确度 | ±0.002 nD |
| Reference wavelength 参考波长 | 589 nm |
| Light source 光源 | Monochromatic LED or sodium lamp |
| Contact liquid index 接触液折射率 | 1.81 |
| Polarizing filter 偏振滤光片 | Included in eyepiece |
| Prism material 棱镜材质 | High-index glass |
| Scale graduation 刻度分度 | 0.01 nD |
| Eyepiece 目镜 | Focusable with scale |
| Power supply 供电 | Battery or mains adapter |
| Model No. | RFR-0005 |
| Place of origin | China (dispatched from Shanghai) |
Applicable standards 适用标准
USP <831>
Ph. Eur. 2.2.6
ISO 2173
ASTM D1218
IEC 61010-1
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.
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