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Guangdong Hongtuo Instrument Technology Co.,Ltd

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DH-900K Electronic Metal Tester Gold Karat Tester High Accuracy

DH-900K Electronic Metal Tester Gold Karat Tester High Accuracy

  • DH-900K Electronic Metal Tester Gold Karat Tester High Accuracy
  • DH-900K Electronic Metal Tester Gold Karat Tester High Accuracy
DH-900K Electronic Metal Tester Gold Karat Tester High Accuracy
Product Details:
Place of Origin: Dongguan China
Brand Name: DahoMeter
Certification: ISO,SGS
Model Number: DH-900K
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Price: negotiable
Packaging Details: standard exporting package
Delivery Time: 3 DAYS
Payment Terms: T/T, Western Union
Supply Ability: 300 sets per month
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Detailed Product Description
Name: DH-900K Electronic Metal Tester Gold Karat Tester High Accuracy Density Resolution: 0.001 G/cm3
Maximum Weight: 900g Weight Resolution: 0.01g
Necessary Weight For Density: 5g Keyword: Electronic Metal Tester,precious Metal Testing Equipment
Warranty: TWO Years,life-long Maintenance Packing Gross Weight: 4.5kg
Stocks: 8 Sets Electronic Metal Tester In Stocks Customizable: Yes
High Light:

0.001 g/cm3 Electronic Metal Tester


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Pt1000 precious metal testing equipment

CE,FCC Certification!Warranty for Two Years!!!

DH-900K Electronic Metal Tester With Factory Price In Testing Equipment​



Application:pawn broking, bank, jewelry shop, precious-metals recovery, jewelry factory, Gemstone Testing Center,precious metals researching.etc.

In accordance with archimedes principle water buoyancy method, GB/T1423 of precious metals testing standard,and so on.

Combine archimedes principle with micro electronic technique;adopt sensor imported from Germany,the purity can be calculated through measuring density of precious metals.features of no damage on sample;simple operation,fast and accurate.

K value of gold,PT value of platinum,density value,purity percentage can be measured.




Model Density resolution Maximum weight Weight resolution Model
DH-900K 0.001g/cm3 900g 0.01g Gold,platinum


Features and Functions:

1. Just two simple steps,the purity of precious metals and gold karat can be showed rapidly and accurately.No stains and scratches left on gold after testing. Needn't use the sulfuric acid solution to test the standard samples.


2.The gold K number and density, platinum Pt value and density can be accurately measured in only 5 seconds.Directly and circularly show the gold karat (including gold-cop.per-silver, gold-silver, gold-copper), gold purity%(including gold-copper-silver, gold-silver, gold-copper) .


3.More intuitive and more rapid to identify gold authenticity. It adopt special software design according to market demand which enable users to set the upper and lower limits of K number and Pt value.When the K value of testing gold is more than 24K, the instrument will display HI. When K value less than 12K, LO is displayed.


4. With the mixture proportion function, it can test other precious metals, such as: platinum, silver, palladium, copper, rhodium...and so on


5.Adopting a light and thin stainless steel can reduce the error caused by the buoyancy of the wire.

6. Adopting the design of big tank, it can decrease the inaccuracy caused by supporting wire's buoyancy


7. Only applicable to solid metal sample which can be inlayed with gem stones . It can also be used as a precision electronic balance.


8.Widely be used in jewelry industry, gold and precious metals research lab, jewelry shop, bank, pawn shops .

Measurement Procedure

a)Place sample on testing board to measure weight in air,press ENTER key to memory.

b)Place sample into water to measure the weight in water,press ENTER key.the K value of gold,purity percent,density value will be displayed.

Standard accessories

Host,sink,test board,tweezer,thermometer,weight,wind and dust cover,a set of measuring particle parts,a set of measuring floating body parts,power transformer














Maximum weight











Weight resolution











Density resolution


Measuring time


Testing board

Completed high-capacity plastic testing board

Measuring type

Traditional gold and platinum jewelry,necklace,bracelet,ring,large bullion,craft,and gold,silver,copper,cadmium,nickel,tin.etc.





Gold mode


Display k value

The K value of mixture of gold,silver,and copper;

The K value of mixture of gold and copper;

The K value of mixture of gold and silver;


Display purity percent

The purity  percentage of mixture of gold,silver and copper; ;

The purity  percentage of mixture of gold and copper;

The purity percentage of mixture of gold and silver;

K value range


Copper and silver proportion setting

Cycle seting(default 7:3)



Display value

PT percent,density value,volume

PT value range

Pt600 - Pt1000

Other Precious Metals


Only for DA series and DE series:measure the purity percentage of main materials in two kinds of mixture

Display value

Only for DA series and DE series:density value,volume,content precentage


Only for DA series and DE series:density value of main materials and secondary materials setting

Measuring container

completed injection forming transparent professional measuring tank


Parameter setting

water temperature setting,measuring medium density setting


Archimedes principle

Memory method

Two procedures

Correction method

Auto calibration with one key,auto detection.

Output method

Output and print testing data conveniently with standard communication interface of RS-232C.

Standard accessories

Host,tank,test board,tweezer,thermometer,weight,wind and dust cover,a set of measuring particle parts,a set of measuring floating body parts,power transformer

wind and dust cover

Adopt the unicase dedicated wind and dust cover

Option accessories

DE-40 printer


AC 100V – 240V(Europe standard)

Main features

Simple operation,digital display,accurate measuring,stable,durable.


DH-900K Electronic Metal Tester Gold Karat Tester High Accuracy 0


Packaging & Shipping


Packing size:42 X 16 X 32cm


1.Normally orders will be shipped out around 5 working days once payment received. for custom made parts.needs to be negotiated.


2.We Will ship by DHL, FedEx, UPS, EMS( we will choose the best way to ship the items ASAP). You will be updated the tracking number via Aliexpress. Generally, it takes 3-7 delivery days to your shipping address.Please make sure the phone number is valid.


3.Kindly please note the tax fee and clearance fee are not included in the item price. You have to take the responsibility for the tax and clearance fee.





(1) Is this machine for professional use in jewellery store? is application to jewellery ,pawn shop,cash for gold,collecting coins.,etc.

(2)What the machine can measure?

Precious metal.such as gold,Karat gold,platinum,silver.
Mixed metal or other alloy metal.
Jewelry materials.such as earring,ring,necklace,bracelet,watchband,belt fastener,gold ingot,gold bar,statue,coin.,etc.


(3)What the machine can display?

karat value,purity percentage,density for gold

PT value,purity percentage,density for platinum

S value,purity percentage,density for silver

percentage content,density for other alloy.


(4)Does this item can read gold purity even if there is a mark says 14K but it is really 12K? does.

(5)What's the accuracy on reading?

Density resolution:0.001g/cm3
Weight resolution:0.005g/0.001g
K resolution:1K/0.1K


(6)What's size of sample you can put inside the machine?
for DH series:16.9cm X 9.8cm X 8.3cm
for AU series:15.3cm X 10.7cm X 9.3cm


(7)Does this machine can be connected with PC,and printer? has the RS-232C interface.the measuring data can be output through PC and printer.
The printer is optional when customers make purchasing.


(8)Does this machine can test the specific gravity of gemstones? does.
Also it can test the specific gravity for all kinds of solids materials.


(9)Does this machine can be used as scale?
Yes.This machine has scale function.


(10)What's the power supply?
The default power supply is Europe standard AV100V - 240V.based on customers' requirement.


(11)What's the quality assurance?
The warranty is for two years from the date of receipt.if any parts broken and verified it is within the range of quality assurance(please refer to our quality assurance policy).we shall send new accessories or new machine for replacement.



Contact Details
Guangdong Hongtuo Instrument Technology Co.,Ltd

Contact Person: Mrs. Julie Zhong

Tel: 86-13267004347

Fax: 86-769-2318-1253

Send your inquiry directly to us (0 / 3000)

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