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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






Product Description


Introducing the top of our lifestyle range of products, Hyflux DEW D800 water dispenser dispenses  hot, cold and ambient water immediately! The intelligent DEW D800 is able to track the lifespan of your water filtration system at home, making your kitchen environment smarter!


Compatible with either Hyflux’s water filtration system or to that of our very own Hy-Q Aqua brand from Korea, the DEW D800 can dispense water at three temperatures – Ambient, hot (> 90 °C) and cold (< 15 °C). It can also alert you when you need to change your filtration system – the “H” in the centre of the dial will turn red.


The DEW D800 Water Dispenser comes with a smart control panel with sensitive touch keys. It is also user-friendly and comes with a child-lock key (great for families with young children).


It consumes only 510W of electricity, which is lower than that of an electric kettle (typically around 1200W), as well as a microwave with a turntable (900W). Worried about electricity consumption?  You can even choose to save power by selecting the ECO mode on the dispenser. An Eco-Mode function can help you save energy when it is idle and the automatic reheat button warms up your water in a matter of minutes.



Key parameters:


  • Dimensions (mm) : ​440 (W) x 270 (D) 570 (H)
  • Weight : ​4.5kg
  • Voltage/Frequency : ​220 V / 50 Hz
  • Power : ​510 W
  • Water heating capability :4 L/h (≥ 90 °C)
  • Water cooling capability : ​0.4 L/h (≤ 15 °C)
  • Hot water capacity : ​0.8 L
  • Cold water capacity : ​0.4 L
  • Feed water type : ​Filtered water
  • Feed water pressure ​1- 4 bar


With a depth of only 270 mm, there’s more than enough space for the Hyflux DEW D800  water dispenser in your BTO small kitchen. Alternatively you can have it mounted on the kitchen wall to release more space on your kitchen top.  Having cold water readily available at the touch of a button also provides a welcome relief from the hot weather that we have in Singapore. You can also enjoy good quality filtered water that is important to your health.



Wall Mount option. 


Having a set of DEW D800 not only means you won’t have to constantly  boiling water, setting it aside separately to let it cool, it will also mean that you can clear away all of your plastic jugs, your kettle and your thermal flasks – and that is a lot of space saved! With DEW D800 you get either hot, cold or ambient water instantly at the touch of your finger.









The DEW D800 also incorporate a smart re-boil function for continual availability of hot water within minutes.

With DEW D800, it gives you clean drinking water at your fingertips. A dream come true for a home size water dispenser that gives you a cup of ice cool water or hot drinking water at anytime!


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

Hyflux Water Dispenser DEW D800





Torayvino water purifiers is No. 1 popular water purifiers in Japan*                                                 (*Brand awareness research by Toray in Year 2012)

TORAYVINO™ is a home water purifier series that combines Japan Toray’s developed hollow-fiber membrane and activated carbon technologies. These purifiers excel in eliminating residual chlorine, turbidity, rusts, general bacteria and other micro-contamination. Toray’s products sold under this brand include systems designed to connect directly to a faucet, such as the TORAYVINO™ MK303.

MK303 meets all of the 12 JIS tests stipulated for household water purifiers, as well as stand-alone and under-the-sink models and pot models.


  • Torayvino comes from a popular Japanese company called Toray Industries, Inc. Established in Year 1926, it has presence in over 20 countries (including USA, UK, China) with some 46,000 employees. It has a 66 percent market share among faucet-mounted filtration systems in Japan. This says a lot about how reliable and effective the product is.
  • Torayvino MK303-EG produces 99.99% bacteria-free water through its proprietry  4-stage filtration system.


Firstly, the pre-screen removes impurities bigger than 465 um (micron) such as rusts, sands, sediment, and particles.

Secondly. the second screen removes impurities bigger than 114 um (micron) as well as those that couldn’t be removed by the pre-screen.

Thirdly, the granular activated carbon removes residual chlorine, harmful chemicals, and bad odor.

Finally, the hollow fiber membrane precisely removes contaminants in the 0.1 um (micron) unit such as bacteria, rust, turbidity, coliform bacili, microorganisms, and microscopic impurities.

  • A Torayvino faucet-mounted water filter could provide up to 1,500 liters of purified water. To put that in perspective, that’s about three to five months of regular use for a household with four individuals. After that, you will need to change the cartridge only, not the whole unit.

Replacement Cartridge

One important note about the replacement cartridge. In the market, there are many variants of replacement cartridge with different filtration capacity. There are those with 600 litres, 900 litres or 1,500 litres. For example, a replacement cartridge with a mark of 600L means it is capable of filtering only up to 600 litres – beyond which the cartridge is due for a replacement. The same goes for the rest of the variants. Therefore, we advise all not to just look at the pricing alone but also look for the filtration capacity.

Hi-Tech only carries 1,500L capacity replacement cartridge and it is the cheapest in terms of $ per lit.



# Package Content:

1 x MK303-EG  Filter Body

1 x  MK303-EG – 1,500 litres Cartridge

1 x instructional manual in English and other languages


MK303-EG removes all bacteria, harmful organic compounds and residual chlorine.

  • This MK303-EG filter, like all other Torayvino range of products, is a multi-filtration system that removes all bacteria, impurities and odors. It provides a clean, safe and tasty drinking water for all homes.
  • The MK303-EG made up of Toray’s renowned hollow-fibre membrane. The membrane contains more than 520 billion of micro-pores and this provides for an efficient 99.99% removal of all bacteria.
  • The granular activated carbon within the filter removes unpleasant chlorine, bad taste and odors. The filter also preserves all good minerals in the drinking water that are vital for human health.

The Torayvino MK303-EG faucet water filter removes the dirt and odor from the water. It is compact and easy to install. The water purification filter enhances your daily life by removing bacteria, harmful organic compounds and chlorine while keeping all the good minerals in your water with a double filtration system. It employs Toray’s proprietary 4-stage filtration technology.


The 4-Stage Filtration                                                                             

Toray’s best developed proprietary Four-stage filtration technology catches even the most microscopic contaminants.

Stage 1 –  Pre-screen

  • The pre-screen removes impurities bigger than 465um (micron) such as rust, sands, sediment, contaminants and particles

Stage 2  – Granular Activated Carbon (GAC)

  • The Torayvino filter uses high-grade activated carbon to remove residual chlorine water odour and other chemicals from the unfiltered tap water.


Stage 3  – Second Screen

  • Ensures rust, sediments and impurities  that are  bigger than 114um (micron) that could not be removed by the first screen.


Stage 4  –  Hollow Fiber Membrane Filter

  • Toray’s advanced multi-layer hollow fiber membrane precisely removes contaminants in the 0.1um (micron) such as bacteria, rust, turbidity (clarity of water), coliform bacilli, microorganisms and microscopic impurities from water and other liquid solutions without removing calcium, magnesium and other minerals essential to the human body. The same membrane technology is used in dialysis to purify blood in the medical field.


Hi-flow with maximum rate of 2 liters per minute.

This compact water purifier has a maximum flow rate of 2 liters per minute, which makes little change to the normal flow rate of unfiltered water. By simply rotating the water selection lever, you also have a choice of either a stream or a spray of unfiltered water or spray of filtered water.

MK303-EG comes with three optional modes of flow via a selector switch.


            Filtered                                   Unfiltered                         Unfiltered
(Shower)                         (Shower)                           (Straight)

The purpose of the selector switch is to allow user to select when to use filtered water and when to use unfiltered water. This would help to prolong the filter filtration life span as we generally do not need filtered water during washing of dishes.

Easy installation and replacement of the filter cartridge

Installation is very simple. It is a DIY type. In addition, the package comes with multi-adapters that fit most of the tap sizes in Singapore and also installation manual in English and in other languages.


Cartridge attachment / replacement is as easy as 1-2-3!

  • Turn the water selection lever to “Unfiltered Straight” and insert the filter cartridge.
  • Rotate the cartridge 90°to the vertical.
  • Cartridge attachment is complete.


Easy to check trapped impurities through “See-through Window”

This unique feature incorporated only in TORAYVINO® home filters!  Simply open the filter cartridge top cap. Check for contaminants build ups through the “See-through Window” to see if is due to replace the filter cartridge.

The filter cartridge comes with see-through window.  Here you can monitor the cartridge life span.  Simply remove the filter cap to check on the contaminants build-up inside the fibres through the See-through Window. When water flow is low, it is time to replace the cartridge.


Summary of Key Features of MK303-EG

  1. High flow rate of 2 liters per minute. Filtration rating up to 0.1 micron
  2. Advance quick-twist mechanism makes changing filter easy and quick
  3. See-through window shows you when to replace the filter
  4. Multi-adapters for quick and easy DIY installation.
  5. This model comes with a 1,500 liters filtration capacity.
  6. Unit is completely Made in Japan.
  7. It employs Toray’s proprietary 4-stage filtration technology
  8. It filters off 99.99% of all bacteria and other impurities.
  9. Save space as it mounts directly onto the kitchen tap.


For health conscious individuals, having a 99.99% bacteria-free purified water is of utmost importance. Thankfully, the Torayvino faucet-mounted water filter is here. Safe, convenient, cost-efficient, and aesthetically beautiful. More importantly, it works.

For more information on the product and purchase option, click this link or call      Hi-Tech (AEM) at 6749 3003

Torayvino Faucet Mount MK303-EG Water Filtration System

#hitechaem  #torayvino #domesticfiltrationsystem



Are we using too much of plastic

This news first appeared on Strait’s Times on 1 Aug 2018.  Are you surprised that the whole nation used a total of 467 million of PET bottles a year.? 467 million of PET bottles would stretch as far as 300 km if the bottles are lined up end-to-end or approximate 6 times the length of Singapore. An astonishing figure for small country like Singapore.  Collectively let us all do our part to reduce the usage of PET bottles and help to keep our earth green. It is time to say NO to bottled water!!

We at Hi-Tech (AEM), together with our industry partners, can help organisations to reduce the usage of plastic bottles. Our machines can help to track reduction in plastic bottles usage in your organisations.

Call us at 6749 3003! 

#anationofplastic   #hitechaem #greenearth

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