TOPO REF KERATOMETER Tomey Model RT-7000, NEW!
* 3 systems in one device
* Automatic alignment and triggering
* Color touch screen
* Various topography
views * Electronically controlled chin rest
* Joystick orientation
* Pupil and corneal-measurement
Refractive Power Measurement
Spherical Refractive Power (S)
Measurement Range -25.00 D to +22.00 D
(at VD = 12.0 mm)
Display Unit 0.01 D / 0.12 D / 0.25 D
Cylindrical Refractive Power (C)
Measurement Range 0 D to �± 10.00 D
(at VD = 12.0 mm)
Display Unit 0.01 D / 0.12 D / 0.25 D
Astigmatism Axial (A)
Measurement Range 0 �° to 180 �°
Display Unit 1 �°
Minimum Pupil
Diameter Ã?? 2.2mm
Vertex Distance 0mm / 12.0mm /
13.5mm / 14.0mm /
15.5mm / 16.0mm
Measurement Time 0.2 seconds / single eye
Corneal Curvature Measurement
Corneal Curvature (K1, K2, AVG)
Measurement Range 5.00 mm to 11.00 mm
Display Unit 0.01 mm
Corneal Refractive Power (K1, K2, AVG)
Measurement Range 30.68 D to 67.50 D (n = 1.3375)
Display Unit 0.01 D
Corneal Astigmatism (CYL)
Measurement Range 0 D to 10 D (n = 1.3375)
Display Unit 0.01 D
Axis Of Corneal Astigmatism (AXS)
Measurement Range 0 �° to 180 �°
Display Unit 1 �°
Measurement Area
Cornea Ã?? 3.0 mm
(at 8.00 mm corneal
curvature)
Measurement Time 0.1 seconds / single eye
Measurement Of Corneal Shape
Display Range 9 D to 100 D
Commodity: Sodium Hydrosulfite Other name: Synonyms: Sodium Hydrosulphite; Sodium Dithionite; Dithionous acid, Disodium salt; Sodium Sulfoxylate CAS No.: 7775-14-6 Molecular Weight: 174.10 Chemical Formula: Na2S2O4 Product Description Appearance: White, crystalline powder. Product Feature Odor: Slight irritative. Specific Gravity: Unavailable Solubility: Soluble in water. Density: 2.19 pH: 6-7 pH Test-Method: PH test paper. % Volatiles by volume @ 21C (70F): 0 Boiling Point: Not applicable. Melting Point: >300 C Decomposes. Vapor Pressure (mm Hg): No information found. Bulk Density: ~0.9 Evaporation Rate (BuAc=1): No information found. Application 1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching . 2. bleaching paper pulps , especially mechanical pulps, its the most fittable bleaching agent in pulps. 3. bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products, 4. in mineral, the compound of thiourea and other sulphides. 5. as reducing agent in chemical industry. 6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms. Packaging 50kg/100kg net in iron drums with double PVC bags Product Specification/Models NDEX 90%, 88%, 85%. FOOD ADDITIVE Na2S2O4, 90%, 88%, 85%, Fe 20ppm ZincZnOther heavy metal calculated as Pb, 1ppm Water Insolubles05% Shelf Life(month)12
75% Medical Ethanol /Alcohol Process Plant We professional manufacture of ethanol alcohol equipment ,DDGS ,equipment ,vine gare equipment in China. The material can be corn(maize) ,wheat,potato,cassava,molasses,beetroot,or any other material which contains starch or sugar .we sell our products to more than 20 countries all over the world. Now our main products are as follow : 1.Turnkey ethanol /alcohol plant project which can produce 95% -96% food grade alcohol,medical alcohol,reagent grade anhydrous ethanol/alcohol or 99.8% fuel grade anhydrous ethanol .Output can be from 1000LPD to 2million LPD . 2.DDGS protein feed equipment ,feed drying equipment . 3.Waste water environmental process equipment 4.Design and manufacture ethanol/alcohol equipment according to customers inquired or drawing .
Specification item value CAS No. 156-41-2 Other Names MF C8H10ClN EINECS No. 205-853-4 Place of Origin SHA Type Intermediate of medicine Purity 98% Brand Name sealong Model Number sealong156-41-2 Application ntermediate of medicine Appearance Clear colorless to yellow liquid Boiling point 60-65 C0.1 mm Hg(lit.) Density 1.112 g/mL at 25 C(lit.) Refractive index n20/D 1.548(lit.) Molecular Weight 155.62 Storage Store Cold
Specification : - Size : Irregular Length (10-30cm) | Diameter : 2-6cm | Moisture 5% | Volatile 20% | Ash content 4.9% | Fixed carbons 69.5% | Sulfur 0.07% Gross coloric value 7000 kcal | Burning Time: 5 - 7 hours | Packaging : PP bags 20 Kg
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