With a unique weaving process, it has both super high strength and good flexibility. Material:Flexible Glass Fiber. Glass fiber, high flexural strength, easy to adapt. Leia Mais »

Physical Form: Fine, free-flowing crystalline powder. HPLC purity analysis. Intended Research Applications Each batch undergoes rigorous testing including but not limited to. Leia Mais »

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Ophthalmic diagnostic set ophthalmoscope and streak retinoscope SR-24 in China>> Multi-coated optics>> A single control sleeve for vergence and rotation.Comfortable operation.>> Totally dustproof, maintenance free>> Metal handle-for long lasting operation>> Superior streak quality enables easier and quicker refractions-even in patients with small pupils>> The powerful, bright bulb ensures easy recognition of neutralisation.>> The lowest position gives a divergent beam.1. 3.5V Coaxial Ophthalmoscope.Coaxial Ophthalmoscope enable easy entry into undilated pupils for more accurate diagnoses,while two filter selections provide optimum light levels for entering healthy eyes and those with cataracts2. 3.5V Streak Retinoscope.3.5V Streak Retinoscope is designed exclusively to determination of the refraction of the eye. The streak retinoscope is found bymost practitioners to be easy to use, fast, accurate, and especially valuable in determining the axis of astigmatism.3.5V Coaxial OphthalmoscopeDiopter0D, ±1D, ±2D, ±3D, ±4D, ±5D, ±6D,±7D, ±8D,±9D, ±10D, +12D, ±15D, ±20D,-25D,+40DApertureLarge aperture,Small aperture,Micro aperture,Slit aperture,Cobalt blue aperture,Fixation apertureFilterRed free filter / Polarizing filterBulb3.5 V 2.7 WOperation modeIntermittent, On-time should not exceed 2 mins with Off-time not less than 5 mins3.5V Streak RetinoscopeRotation≥ 190°Distance from the device to which the real imagea of the lamp filament is adjustable≤ 450 mmDistance from the device to which the virtual imagea of the lamp filament is adjustable≤ 450 mmLength of streak imageb≥ 30 mmWidth of streak imageb≤ 1.5 mmDeviation from linearity of the streak image at the focusb≤ 2 mmRotation decentring of centre of streak imageb≤ 10 mmA All distances are measured from the light exit of the deviceB When focus at 500 mmElectrical SpecificationsBulb3.5 V 2.7 WOperation modeIntermittent, on-time should not exceed 2 min with off-time not less than 5 min Leia Mais »

3.5V Coaxial Ophthalmoscope. Coaxial Ophthalmoscope enable easy entry into undilated pupils for more accurate diagnoses. 3.5V Coaxial Ophthalmoscope. Rotation decentring of centre of streak imageb. >> The lowest position gives a divergent beam. Leia Mais »