Pen
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DRK8011 Digital Melting Point Pen
The abbeder refractometer bụ ngwá ọrụ nwere ike ikpebi transperent, translucent mmiri mmiri, ma ọ bụ siri ike refractive ND ND na a flat dispersion ND-NC (nke bụ tumadi nke transperent mmiri mmiri bụ tumadi).
