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Review of RayQueen Multi-purpose UV Sterilizer    

RayQueen Multi-purpose UV Sterilizer   

RayQueen Multi-purpose UV Sterilizer


RayQueen Multi-purpose UV Sterilizer                            RayQueen Multi-purpose UV Sterilizer



There are enormous amount of various germs and bacteria found in common spaces and utensils that we used every single day. Most of us usually don’t think much about this since these germs and bacterias are invisible to us. However, the truth is that they exist in almost everything that we touched such as our mobile phones, cutlery, remote controls, cook wares, feeding bottles, wallets, books, utensils and etc.

This is where the award winning RayQueen Multi-purpose UV Sterilizer from South Korea comes into handy. RayQueen UV Sterilizer is a very popular household brand in Korea and widely used not only in homes but also in many food establishments in Korea.


Product Description

RayQueen Multi-purpose UV Sterilizer

  • RayQueen UV Sterilizer is quite easy to operate. It uses high frequency UV-C light rays to kill or inactivate the micro-organisms. The unit comes with OSRAM HNS 6W Germicidal UV tube which is ozone-free and with low mercury content. The UV lamp, with a dominant wavelength of 254 nm, is very effective and environmental friendly disinfection without chemical.

RayQueen Multi-purpose UV Sterilizer


  • Ease of maintenance and cleanliness is very important. The interior of RayQueen is made from great quality Hyundai BNG SS304 high quality Stainless Steel.

RayQueen Multi-purpose UV Sterilizer



  • The model JHS-400 comes in very generous volume too. As a result, the space is capable to sterilize at least twelve (12) baby feeding bottles as well as other large items. We have tried before sterilizing a mid-sized lady leather hand-bag!


RayQueen Multi-purpose UV Sterilizer


  • RayQueen JHS-400 comes with an automatic ventilation. It comes with a ventilation fan fitted inside that circulates fresh air throughout.

RayQueen Multi-purpose UV Sterilizer

  • One distinct feature that stood out for RayQueen is it low temperature sterilization. RayQueen employs heated air drying method via PTC heater technology, that keeps sterilization at max 40 deg C. At 40 deg C, it will not change the shape of object being sterilized but making sure the object is completely dry at the same time. With PTC heater, the energy consumption is at very low 90W.

RayQueen Multi-purpose UV Sterilizer


  • Other important feature, that RayQueen UV sterilizer has, includes a very good and practical safety features. It comes with a tinted glass door that prevents excessive exposure to the UV-C ray, door ON/OFF switch to stop sterilizing if the door is opened half-way through, and an automatic overheating preventing device.


How to use the UV Sterilizer?

RayQueen Multi-purpose UV Sterilizer


Operating RayQueen Sterilizer is real easy. There is only one rotating dial to operate.  Just turn the dial to either left or right and press to select. The indicator will show the course selected and the countdown timer will start.

The unit comes with 3 different course of sterilization.

  • Course 1 – 10 minutes of full sterilization.

This course goes through a complete 10 minutes of UV sterilisation. Upon completion of 10 minutes, it continues to be on stand-by sterilisation mode. Every time the door is opened and closed, a 10 minutes of sterilisation begins.

Choose this course for objects such as mobile phones, remote controllers, papers, bags and etc. Use for dry objects only.


  • Course 2 – 20 minutes of drying + 10 minutes of sterilisation.

In this course, the first 20 minutes will be dedicated for drying the object inside the sterilizer. From 21st to 30th minute, it would sterilized the object using the UV lamp.

Therefore, choose this course for objects that have been washed but still wet such as feeding bottles, cutlery, plates, bibs, cups, toothbrush,  shavers, beauty tools, combs, cook wares and etc.


  • Course 3 – 60 minutes in total (2 cycles of Course 2 as above)

It consists of first 20 mins of drying follow by 10 mins of sterilisation and another similar cycle again.

Similarly, choose this course for objects that are very wet and take a long time to dry like towels, table rags, plush toys, dish cloths, baby pillows, and etc.



How do you know this UV Sterilizer by RayQueen is effective?

The manufacturer had commissioned a testing laboratory (Korea Testing and Research Institute) in Korea to certify their effectiveness.

See extract copy of the test report.

RayQueen Multi-purpose UV Sterilizer


The sterilizing ability drops by 99.9%.

The UV sterilizer has also received multiple certifications from recognised certification bodies including US Food and Drug Administration (FDA).


RayQueen Multi-purpose UV Sterilizer



What is included in the package?

The RayQueen Multi-purpose UV Sterilizer by Hi-Tech (AEM) Pte Ltd comes specifically with our local warranty of 6 months, operating manual in english, local 3-pin plug, 2 pcs of stainless steel shelf and a plastic tray.

RayQueen Multi-purpose UV Sterilizer


Key parameters:

  • Dimensions (mm) : ​290 (W) x 430 (D) 405 (H)
  • Weight : ​5 kg
  • Voltage/Frequency : ​220 V / 60 Hz
  • Power : ​90 W
  • Drying method: Heated air drying by PTC heater
  • Sterilizing method: UV-C germicidal lamp 6W
  • Plug : UK 3-pin plug
  • Colour : Wine red or Silver
  • Warranty: Local warranty 6 months.




  • We have been representing RayQueen since 2017 and have been selling hundreds of such products locally. It is a very effective and a versatile product that can be used to sterilized any objects as it is operating on low heat basis. Apart from having to replace the UV lamp after using for 2 years, this unit has been very reliable.
  • The spacious volume allows even bigger object to be sterilized.
  • Test reports suggest that kills off up to 99.9% of bacterias.
  • Because of its versatility, we have seen a high demand from young mothers and also from childcare centres and pre-schools, especially so during this Covid-19 period.

For more information call Hi-Tech (AEM) Pte Ltd at 6749 3003 or click on the following links to make a purchase

Product Review of Hyundai Waco Ultra-Filtration (UF) Hollow Fibres Membrane

Hyundai Wacotec Ultra-Filtration (UF) filter is best suited in removing high molecular weight substances, colloidal materials, organic and inorganic polymeric molecules and bacteria up to 99.99% except minerals. Filtration pore size is up to 0.03 micron (or 0.03 millimeters). This means, any substances or micro-organisms that larger than 0.03 micron will be filtered off. 

Hyundai Waco Ultra-Filtration (UF) Hollow Fibres Membrane  Hyundai Waco Ultra-Filtration (UF) Hollow Fibres Membrane

Specification of UF Membrane Filter


UF Membrane Filter
Max Flow Rate 0.5 GPM(1.9Lit)
Working Pressure 14 ~ 57 psi (1 ~ 4kgf/㎠)
Temperature 33 ~ 100’F (4 ~ 38℃)
Capacity 5,000 Gal (18,900Lit)
Service Life About 18 to 24 months
Evaporated remains Below 500 ppm or less



Characteristics of Ultra-filtration (UF) Membrane

There are few important characteristics of a good UF membrane.

Firstly,  a UF membrane comes with pore sizes in the range of 0.03 to 0.05 micron. They are usually used to remove high molecular-weight substances (such as sediments and suspended solids), colloidal materials, organic and inorganic polymeric molecules and bacteria. However, ions and minerals in the water will be allowed to pass through.

Secondly, because of the structural construction and polymeric nature of the UF, they can operate in low pressure.  This makes the water pressure found in our homes more than sufficient to achieve high flow rates from an ultra-filtration membrane. Flow rate of a membrane is defined as the amount of permeate (product flow after filtration) produced per unit. In this case, Hyundai  Wacotec UF filter shows excellent water permeability.

In addition, operating in low water pressure also means the set-up need not required any mechanical or electrical power to assist. As a result, it makes the operating cost more economical and more affordable to many homes.

What can a UF filtered off?

The illustration below shows what are the elements that can be filtered off by Ultra-filtration filters and what are allowed to pass through.  Do note that monovalent and multivalent ions that are essential for our bodies are allowed to pass through the UF filters. However, others such as viruses, bacterias, micro-organisms and suspended solids such as rusts, heavy metals and etc will be filtered off.

Hyundai Waco Ultra-Filtration (UF) Hollow Fibres Membrane

Specification of Hyundai Wacotec UF Hollow Fiber Element Material
Parameter Specifications Conditions
Material Polysulfone
Outer Diameter 450+_20 um
Inner Diameter 270+_15 um
Particle Size cut off < 0.03 um 20℃, 1kg/㎠
Pure water Flux 50L / min.㎡ 20℃, 1kg/㎠, initial rate
Operation Pressure 0.5~0.4kg/㎠ 20~30℃

To demonstrate the effectiveness of the Hyundai Wacotec UF filter, the manufacturer had conducted a laboratory test and below is the outcome: –

Hyundai Waco Ultra-Filtration (UF) Hollow Fibres Membrane

The above laboratory result shows that the Hyundai Wacotec UF filter removes 100% all bacteria and other Micro-organisms while allowing the important minerals and ions to pass through.

Hyundai Waco Ultra-Filtration (UF) Hollow Fibres Membrane

• The above test was certified by KOTRIC (Korea Testing & Research Institute for Chemical Industry)

This Hyundai Wacotec UF filter also comes with NSF certified components (Tested and Certified to ANSI/NSF Standard 42). A NSF certified means that the filter is manufactured according to stringent standards,  using only approved materials and processes that required for drinking water. At the same time, this UF filter also comes with America’s  Food and Drug Administration (FDA) certification.


Hyundai Waco Ultra-Filtration (UF) Hollow Fibres Membrane


The service life for this filter is rather long at 18,900 liters. For a typical household with 4 family members, this service life means that the UF filter could last up to 24 months before replacement of filter kicks in.


Hyundai Wacotec UF Filter is a very good filter that can be used to pair up with other in-line filters such as Hy-Q Aqua Pre-Carbon, Post-Carbon and even Nano-PH Alkaline filters. Based on the filter specifications and performance, it can be safely said that this filter performs at very high level of filtration. Test report indicated that it is able to filter off bacterias, viruses  and other living micro-organisms found in the water.

With filtration capacity of 5000 gal (or 18,900 liters), it can be safely said that the life span for any homes usage should be around 2 years before replacement kicks in. Therefore, this filter is a good fit to supplement all range of our water dispensers and water coolers products. Or it could also be used on its own without any dispensers.

For more on product information and installation options, please call Hi-Tech at 6749 3003   or click the following link


Hy-Q Aqua 4-Stage Sediment, Ultra-Filtration (UF), Pre-Carbon & Post-Carbon Filtration System


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