Pre-sale Service

1. According to product’s using condition, technicians will offer rationalization proposals to assist clients to select proper types;
2. Provide detailed product performance specification;
3. Provide professional quoted price;
4. Provide 24-hour technical consulting reply.
5. Provide other corollary equipment according to client requirements.

In-sale Service

1. Begin to supervise from raw material, its qualified rate can reach to 100%;
2. Whole manufacturing process are in strict accordance with promised procedure requirements, product qualified rate can reach to 100%;
3. Provide product’s inspection record of key junctures to customers;
4. Provide production schedule photos to customers at regular intervals;
5. Package and transport products strictly accordance with export standard;
6. Provide transportation schedule information to clients timely.

After-sale Service

1. Provide targeted installation video;
2. Under the premise of correct installation, normal maintenance and using, we guarantee one-year warranty period;
3. When warranty period has expired, our sold products enjoys lifetime guarantee repair, we only charge cost price for changing product’s standard component and sealing component;
4. During installation and adjustment period, our after-sale service staff will communicate with customers frequently to know product’s running state in time. Assist customers to install and adjust products until customers are satisfied;
5. If product has malfunction during operation period, we’ll offer you satisfied answer in time. We’ll reply you within 1 hour and provide solution or send staff to spot within 24 hours after receiving maintenance notification.
6. Lifelong free technical support. Conduct satisfaction survey and inquiry equipment running condition to clients by telephone or e-mail semiannually from the first day of equipment running, put on records of acquired information.
7. Provide assistant service if product is damaged during transportation.

Frequently asked questions of customized 220v 5l multiple effect evaporator for fractionating distillation

1. Ask: What’s the operating principle of rotary evaporator? 
   Answer: Under the condition of negative pressure, evaporating flask rotating in the thermostat water bath, which makes solution form a thin film in bottle wall, so as to increase the evaporation area. Evaporating efficiently under low temperature, then condensate recycling through condenser pipe and concentrate to isolate the material to reach experiment requirements. 
2. Ask: What’s the core technology of Rotary Evaporator? 
   Answer: The key is system’s gas tightness, that is whether system can keep high vacuum degree under all sorts of solvent’s corrosion and movement state. Henan Lanphan’ s R series instrument, which is sealed by composite material four fluorine rubber and glass, can stand all sorts of solvent, has reliable gas tightness and can maintain a high vacuum degree above -0.096MPa. 
3. Ask: What factor decides the working efficiency of Rotary Evaporator? 
   Answer: For same type equipment, mainly includes: steam temperature, vacuum degree and cooling water temperature. Restricted by some material’s thermolability, the steam temperature may have certain limitation when working, so high vacuum degree and low cooling water temperature are two main factors for efficiency improving (can select cryopump to lower the temperature) 
4. Ask:How to select all kinds of rotary evaporator? 
   Answer: As for structure, our R series products all have excellent corrosion resistance ability and leakproofness ability. According to the solvent volume, 2L, 3L, 5L’s machine is fit for lab and sample test; 5L, 10L, 20L’s machine is fit for medium experiment; 20L, 50L’s machine is fit for medium experiment and production, especially suitable for the extraction of metal ion-avoiding polluted material.
5. Ask: What’s the feature of rotary evaporator comparing to other evaporators? 
   Answer:It has the advantage of small structure, efficient, easy to observe and no metal ion pollution. It is applicable for laboratory, production and valuable material extraction. Its leakproofness ability can compare favorably with foreign equipment while it remain improvement in appearance and humanization design. 
6. Ask: How to select vacuum pump for rotary evaporator? 
   Answer:We recommend water-circulating pump which can bear all sorts of solvent corrosion and can vacuumize to -0.095MPa(to satisfy using requirements). According to the solvent volume, we can offer various vacuum pump types.

Comparing to similar products, customized 220v 5l multiple effect evaporator for fractionating distillation owns a lot of superiority:

1. Newest research rotary evaporator, heating kettle is made from Teflon recombination material, whole sealing heating mode to prevent dry running, applicable of water and oil.
2. Adopt international advanced EL gastight system, Teflon + fluorine rubber double sealing ring, to keep high vacuum degree, gas-liquid separation, no drawback.
3. High efficient double condenser to ensure high recovery rate.
4. Rotary bottle is connected by nut to convenient for assemble and unassemble.
5. Discharging valve is convenient to recycle solution.
6. Vacuum check valve is installed between receiving flask and vice condenser, evaporation won’t be effected when discharging, vacuum condition is applicable for continuous feeding.
7. Vacuum meter makes it possible to adjust to a best working vacuum degree for low boiling point material.
8. Thermostatic control the water bath, lifting up and down.
9. Reasonable structure, mechanical structure is made from stainless steel and aluminium alloy, glass component is made from borosilicate glass.
10. Applicable for continuous feeding.
11. Double digital display of temperature and rotary speed.