Q: What types of scientific instruments do you offer?
A: Etallwit provides a comprehensive range of high-quality laboratory instruments and supplies, including:
·Analytical and electronic balances
·Ultrasonic cleaners
We also offer a full spectrum of lab essentials. Our solutions extend beyond products, with our expert team providing professional installation, hands-on training, and ongoing technical support to maximize your investment.
Q: Are your instruments CE and ISO certified?
A: Yes, all Etallwit products are CE and ISO certified, guaranteeing compliance with international quality and safety standards.
Q: Do you offer technical support and training for your products?
A: Absolutely. We provide comprehensive technical support, including installation and training services. Each instrument comes with a detailed manual. For simple equipment, we offer online video guidance. For complex devices, our engineers provide on-site installation and usage guidance to ensure optimal performance.
Q:Do you have distributors or branch offices?
A:Yes, Etallwit Scientific has established partnerships with distributors in several countries and regions. Our headquarters is in Guangzhou, China, and we also have a branch in Japan. We're always looking to grow and invite more distributors and agency to partner with us in bringing top-quality scientific instruments to labs around the world.
Q: What markets does Etallwit Scientific serve?
A: Etallwit Scientific supports global scientific research across diverse sectors. Our versatile and reliable products cater to both academic research facilities and industrial laboratories. We partner with:
·Biotechnology firms
·Pharmaceutical companies
·Government agencies
·Military institutions
·Academic institutions
·Food and petroleum product companies
·High schools
And many more research-oriented organizations worldwide.
1.Daily maintenance notes of pipette:
a. After each experiment, the scale of the pipette gun should be adjusted to the maximum so that the spring can return to the prototype to extend the service life of the pipette gun.
b. Pipettes with liquid suction should not be placed flat: the liquid in the head can easily contaminate the inside of the gun and may cause the spring of the gun to rust.
c. When setting the range, please be careful to rotate until the required range number is clear in the display window, and the range set is within the range of the pipette. Be careful not to rotate the button out of the range, otherwise it will jam the mechanical device and damage the pipette.
2. When should the pipette be recalibrated?
It is recommended to calibrate 1-2 per year according to the frequency of use.
3. Pipette calibration reference and fine tuning method?
To correct by the method of calculating the weight of pure water taken from the weighing of the analytical balance in parts per hundred thousand or parts per million. 1ml distilled water weighs 1.000g at 20℃. The capacity can be increased by turning the nut clockwise with the calibration tool when the capacity is small. If the capacity is too large, use the calibration tool to turn the nut counterclockwise to reduce the capacity.
4. After high temperature disinfection, how long should the manual pipette be cooled before it can be used?
After high temperature disinfection, it needs to be fully cooled, it is recommended that more than 3 hours, and recalibrate before use.
5. Does the Etallwit pipette need to be recalibrated after high temperature disinfection?
Recalibration is required after high temperature disinfection.
6. How long is the service life of Etallwit manual pipette?
Customers use different frequency, can support more than 100,000 times of suction and drainage;
7. What should I do if the liquid enters the pipette by mistake when sucking liquid?
If an accident occurs and liquid enters the pipette, please stop using the pipette first and remove the liquid as soon as possible. If thorough cleaning is required, disassemble, clean and perform subsequent lubrication maintenance according to the pipette manufacturer's instructions.
Why do magnetons jump?
In the process of using magnetic stirrer, if there is a jump phenomenon, it may be caused by the following reasons:
1. Magneton type does not match
The suitable magneton type should be selected according to the sample volume and viscosity during the stirring process.
2. Magneton size mismatch
Choose magnetons of the appropriate size for the size of the container. Generally speaking, 30 mm agitator is suitable for most ordinary beakers.
3. The eccentric position of magneton is unbalanced
During agitation, the container should be in the center of the plate, and the magneton should be placed in the center of the container.
4. The rotational speed exceeds the threshold
Speed regulation must be gradually adjusted from low speed to high speed, do not allow high speed start directly, so as not to synchronize the stirring, cause beating.
1.The type of centrifuge rotor is introduced
There are two types of common centrifugal rotors: fixed Angle rotors and horizontal rotors. Here are the main differences:
Fixed Angle rotor:
Fixed Angle rotor refers to a fixed Angle between the central shaft of the centrifugal tube and the rotating shaft, most of which is between 14 and 45 degrees. The larger the Angle, the better the separation effect. The advantages of this rotary head are low center of gravity, balanced operation, and can quickly collect sediment. However, when the particles settle, they will hit the centrifugal tube along the centrifugal force direction, and then slide along the tube wall to the bottom of the tube, forming precipitation. The wall effect is easy to cause strong convection in the tube, affecting the separation effect.
Horizontal rotor
Also known as the swing rotor, consisting of a horizontal rotor, a hanging basket and an adapter. When stationary, the basket is in a vertical state, while when running, it is in a horizontal state, at a right Angle to the bearing. The sample will concentrate precipitation at the bottom of the centrifugal tube. The advantage is that the position of components in the sample relative to the tube wall does not change during and after centrifugation, so the centrifugation effect is better than that of angular rotor.
2.What are the advantages of carbon fiber rotors
Carbon fiber rotor has the advantages of light weight, high rotational speed, fast speed-up, high mechanical strength and long service life.
Carbon fiber rotors, an advanced alternative to traditional metal rotors, offering unequalled durability with fatigue-and corrosion-resistance for worry-free operation spin after spin.
3.How to choose a suitable centrifuge?
According to the total amount of samples in the experiment, the requirements of temperature, centrifugal speed, and the rotor, select the corresponding centrifuge, the common classification is: low-speed centrifuge, high-speed centrifuge, large-capacity centrifuge, freezer centrifuge and so on.
4. About low speed centrifuges
Low speed centrifuges generally refer to centrifuges with a maximum speed of less than 10000 rpm. Due to the low centrifugal force of low-speed centrifuge, the swing rotor with better centrifugal effect than angle rotor is usually adopted. The swingrotor is a non integral structure, which is usually divided into two parts: the swing yoke and the buckets. Multiple Etallwit low speed centrifuge models available, provide different centrifuge rotor options and adapters. Same rotor accommodate different capacity standard centrifuge tube, blood collection tube and MTP. End-user don't have to replace rotor, more convenient.
Widely used in clinical medicine, clinical research, PRP, cell culture, bioengineering etc.
5. About high speed centrifuges
High speed centrifuges generally refer to centrifuges with a maximum speed of more than 10000 r/min. The max speed of CH260R up to 26000 r/min. Most high-speed centrifuges use angle rotors with integral structure.
Mainly uesed in Scientific Research, Academic Research, Biology, Chemical Analysis.
6.Is there a multifunction centrifuge that can accommodate low speed and high speed ?
Yes, CHT210R with 19 rotors available for selection, can be used for high-speed centrifugation, as well as large-capacity low-speed centrifugation, meet the diversified needs of the experiments.
Q: Can I request a product demo or sample before purchasing?
A: Certainly! We're happy to arrange product demonstrations or provide samples upon request to ensure our equipment meets your specific requirements.
We understand the importance of ensuring our equipment meets your specific requirements. While we typically don't provide samples for all products due to the nature and cost of scientific equipment, we offer several options to help you make an informed decision:
·Product demonstrations: We can arrange virtual or in-person demonstrations of our equipment, allowing you to see the product in action and ask questions directly to our experts.
·Detailed specifications and user manuals: We provide comprehensive product information, including technical specifications, user manuals, and performance data.
·Customer testimonials and case studies: We can share feedback and experiences from other clients who have used our products in similar applications.
·Video tutorials: For many of our products, we offer detailed video tutorials showcasing the equipment's features and operation.
In special cases, for qualified institutional buyers or for large volume purchases, we may consider providing samples of certain products. This is evaluated on a case-by-case basis. Please contact our sales team to discuss your specific needs and we'll do our best to accommodate your request.
Q: Do you offer start-up lab discounts?
A: Absolutely! We understand the excitement and budgetary constraints of setting up a new lab. We offer bundle deals on lab equipment and consumables, allowing you to maximize your investment. Our principle is simple: the more you acquire, the more you save!
Q: Do you provide customized scientific equipment solutions?
A: Yes, we specialize in tailoring solutions to meet your laboratory's unique needs. This includes modifications in size, functionality, and features to ensure optimal performance in your specific research environment.
Q: Is there an order minimum?
A: We don't have a minimum order for standard products. However, for customized solutions, a minimum purchase order may apply.
Q: How can I get a quote for bulk orders?
A: You can easily request a quote through our website by filling out the provided form. Alternatively, our sales team is available to offer personalized assistance and discuss your specific requirements.
Q: What payment methods do you accept?
A: We offer a variety of secure payment options including T/T (wire transfer), L/C (Letter of Credit), Western Union, MoneyGram, Alipay, and Alibaba Trade Assurance. For bulk orders, we also provide flexible payment terms.
Q: How long does delivery take?
A: Delivery times typically range from 7-14 business days for in-stock items, depending on your location. Custom orders usually require 20-30 days, varying based on quantity and specifications.
Q: Do you handle international shipping?
A: Yes, we provide global shipping services. We work with reliable logistics partners like DHL, FedEx, TNT, EMS, and ePacket to ensure timely and secure worldwide delivery. For specific shipping requirements or queries, please contact us directly.
Q: Do you offer warranties on your instruments?
A: Yes, we provide comprehensive warranty coverage for all our products. Our standard warranty ranges from 12 to 24 months, depending on the specific instrument. We also offer optional extended warranty plans for additional peace of mind. For detailed warranty terms on particular products, please contact our customer service team.
Q: How does your factory ensure quality control?
A: At Etallwit, quality control is paramount throughout our entire production process. Every piece of laboratory equipment undergoes stringent quality checks from the initial stages of manufacturing to final testing. Before shipment, each product is fully assembled and rigorously tested to guarantee reliability and accuracy in your experiments. This meticulous approach ensures that only products meeting our high standards reach our customers.
Q: What should I do if I encounter a quality issue?
A: In the unlikely event of a quality issue, we're committed to swift resolution. Within the first year of purchase, we will replace any faulty accessory free of charge. Simply reach out to us, and we'll promptly ship a replacement. Our dedicated support team is available 24/7 to assist you. You can contact us via:
Phone: +86-15018475259
Email: service@etallwit.com
We guarantee a response within 24 hours to address your concerns and ensure your research continues uninterrupted.
How to install the instrument?
The instrument comes with a detailed manual, simple equipment can be installed according to the manual, and our technicians can also provide online video guidance; For complex device, our engineers will be on-site to guide the installation and use.