How to choose a laboratory electric heating plate?

Laboratory electric heating plates may appear simple, but they are commonly used equipment with numerous user pain points. If the backend instruments are advanced while the front-end processing equipment lags behind, significant issues can arise in laboratory performance. The main pain points of laboratory electric heating plates include:

1. The chassis is prone to corrosion, which affects the aesthetics of the laboratory.

2. Liquid leakage from the heating plate panel compromises laboratory safety.

3. The heating wire has a short lifespan, negatively impacting the user experience.

4. Low thermal efficiency results in high operating costs.

5. The temperature controllers are often of inferior quality, with short lifespans and poor temperature control accuracy.

As a trusted brand with 18 years of experience, Jinrongyuan Laboratory Hot Plates provide detailed answers to researchers' questions, hoping to earn your support:

1. Regarding chassis material: Most laboratory hot plates on the market feature carbon steel with baked enamel coating, while others use stainless steel or stainless steel with baked enamel. Some even employ Teflon-coated enamel chassis. Since laboratory hot plates often operate in highly corrosive environments with acid fumes, any microscopic pores in the enamel coating will eventually allow rust spots to form from the inside out over time—even in stainless steel enamel chassis. New brands of laboratory hot plates can make unfounded claims without market validation. Most companies cease operations within 5-6 years. Jinrongyuan, an 18-year-old brand, initially used carbon steel with 250°C baked enamel for its hot plate enclosures, which also succumbed to rusting. In recent years, Jinrongyuan has experimented with plastic injection-molded enclosures. However, plastic degrades significantly under high temperatures, with surface paint deterioration being particularly severe. This approach carries high production costs. Currently, Jinrongyuan laboratory hot plates primarily utilize premium aluminum alloy enclosures with baked paint finishes. These enclosures are lightweight, corrosion-resistant, aesthetically pleasing, and generally capable of withstanding highly corrosive environments.

2. Regarding heating plate surfaces: Current options include graphite, stainless steel, aluminum, ceramic, and black crystal heating plates. Three key criteria guide surface selection: thermal conductivity, infrared emissivity, and corrosion resistance. Stainless steel heating plates are prone to rust and discoloration, offering poor aesthetics but good thermal conductivity with average radiation efficiency. Aluminum heating plates are susceptible to oxidation, providing excellent thermal conductivity and average corrosion resistance/aesthetics, but exhibit poor infrared radiation performance, high panel temperatures, and low surface temperatures. Ceramic heating plates offer good aesthetics and corrosion resistance with excellent infrared radiation, but their thermal conductivity is poor. Overall, graphite heating plates and black crystal (microcrystalline) heating plates provide superior aesthetics, heat transfer, infrared radiation, rapid heating, and energy efficiency. Screws must not be installed on the heating plate surface to prevent heated solutions from seeping into the equipment housing, which could cause circuit short-circuits or other safety incidents.

3. Heating elements in hot plates have a finite lifespan, much like human life. Jinrongyuan laboratory hot plates feature heating elements with an average lifespan of approximately 5 years. Numerous cases demonstrate that replacing the heating element extends the hot plate's operational life beyond 10 years. Heating plates feature numerous types, specifications, and brands of resistance wires. Many manufacturers are unaware of the exact model and specifications of the wires they use—a key reason why this seemingly simple product is difficult to produce well. Many laboratory heating plates on the market display power ratings that do not match actual output. Using Jinrongyuan graphite heating plates or Jinrongyuan black crystal heating plates can save enough in maintenance and electricity costs over several years to offset the cost of a new heating plate.

4. Regarding Heating Plate Temperature Control: Temperature control for laboratory heating plates is not overly complex. PID control and programmed ramping are readily achievable. Some manufacturers now develop touchscreen controllers using learning boards. While these controllers may improve aesthetics, but their functionality remains comparable. Major manufacturers' temperature controller chips incorporate corrosion-resistant designs, corrosion detection, vibration detection, and various tests. Controllers developed using learning boards are truly only suitable for educational purposes. In the harsh corrosive environment of a fume hood, such superficial solutions bring only frustration and loss. Not every car manufacturer can develop its own engine, and even Boeing aircraft engines are not entirely manufactured by Boeing itself.

A laboratory hot plate is a simple device, yet addressing these pain points requires coordinated scientific and technological advancement across society. Jinrongyuan Instruments, a brand with 18 years of heritage, pioneered China's first laboratory graphite hot plate in 2006 and launched China's first laboratory black crystal hot plate in 2015. Rapid heating, corrosion resistance, extended lifespan, and uniform temperature distribution remain Jinrongyuan's unwavering pursuit in laboratory hot plate technology.