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DH-300K Hot Selling Electric Digital Gold Tester Machine Gold Density Tester/Precious Metal Tester

Min. Order
1 Set
Choose your specifications
Company Information

Dongguan Hongtuo Instrument Co., Ltd.

CN Manufacturer, Trading Company
Response Time
Response Rate:
US$ 100,000+
6 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Warranty: two years;life-long maintenance
Place of Origin: dongguan,china
After-Sale Service Provided: Yes
Maximum weight: 300g
Model Number: DH-300K
Certification: CE,FCC
Power Supply: Europe Standard AC 100V - 240V
Testing Before Delivery: Yes
Minimum weight: 0.005g
Brand Name: Dahometer
Delivery Time: 2-7 days
Density Resolution: 0.001 g/cm3
Interface: RS-232
Power: Electronic
Packaging Detail: standard exporting wooden package
Selling Units: Single item
Single package size: 45X20X36 cm
Single gross weight: 5.5 KG

DH-300K Hot Selling Electric Digital Gold Tester Machine Gold Density Tester/Precious Metal Tester



To help to protect your benefit and enjoy good after-sale customer service.Please verify if the store is "Dongguan Hongtuo Instrument Co.,Ltd".Also please verify our band "DahoMeter "and "Quarrz".We are the only manufacturer of these products in China.Recently we found out some shops in MadeInChina just copied our products completely.We have never authorized any other shops to sell our products.

We ONLY offer the after-sale customer service to the customers who purchase the machines from our factory DIRECTLY.


Please be noted that the machine has limited function which is determined by its' principle.

Following gold type can't be tested:

(1)gold has any decoration.
(2)gold has the painting.
(3)gold inside is hollow.

(4)Plating gold.


Product Description


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.




Density resolution:0.001g/cm3

Weight resolution:0.05g

Necessary weight for density:4g




  • Quickly measure the purity of gold,platinum,and other precious metals.Distinguish if the object is fake or genuine.
  • No damage testing, cleaning and environmental protection.
  • Measuring just need 10 seconds,convenience,stabilization,and accuracy.
  • Multi-mode,gold mode,platinum mode,other precious metals mode can be shifted..
  • Multi-function;The purity of other precious metals can be measured.Such as tin,copper,silver.Etc.Also it can be used as precision balance.
  • Function of top and bottom limitation,it can display OK,HI,LO in the state of
  • Qualified,exceed,less.Prompt alarm.
  • Function of automatic zero tracking,buzzer warning,and overload warning.
  • Function of solution compensation.Either water or other liquids can be used as medium.
  • Adopt the completed high-capacity measuring accessories with the transparent injection mould tank,which can resist wear,fall off,and corrosion.
  • Adopt the completed special wind and dust cover,which makes the structure convenient and durable.
  • Interface of RS-232C is included.The printer of DE-40 will be available to connect PC with machine
Measurement Steps


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

Data Table




Maximum weight300g600g900g1200g300g600g900g1200g120g200g
Weight resolution0.005g0.005g0.01g0.01g0.005g0.005g0.01g0.01g0.001g0.001g
Density resolution0.001g/cm3
Measuring time10S
Testing boardCompleted high-capacity plastic testing board
Measuring typeTraditional 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 range9K~24K
Copper and silver proportion settingCycle seting(default 7:3)



Display valuePT percent,density value,volume
PT value rangePt600 - Pt1000
Other Precious MetalsFunctionOnly for DA series and DE series:Measure the purity percentage of main materials in two kinds of mixture
Display valueOnly for DA series and DE series:Density value,volume,content precentage
SettingOnly 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 settingWater temperature setting,measuring medium density setting
PrincipleArchimedes principle
Memory methodTwo procedures
Correction methodAuto calibration with one key,auto detection.
Output methodOutput and print testing data conveniently with standard communication interface of RS-232C.
Standard accessoriesHost,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 coverAdopt the unicase dedicated wind and dust cover
Option accessoriesDE-40 printer
PowerAC 100V - 240V(Europe standard)
Main featuresSimple operation,digital display,accurate measuring,stable,durable.
Packaging & Shipping


Items will be shipped out within 3 to 5 working days upon verification payment.

Items will be shipped out via Fedex,DHL or will take around 5 to 7 days to get your door given considering everything goes well.




Company Information

 We, Dongguan Hongtuo Instrument Co., Ltd, a China based company, are pleased to introduce ourselves as a notable testing equipments and machines manufacturer.Our company was established in the year 2000 with two primarily motto, which includes complete client satisfaction and to reach top-most position in the international market. The exceptional quality of our products like Gold Tester,Gold Testing Machine,Density Meter,Universal Tensile Testing Machine,Climatic Chamber,Melt Flow Index Tester,Charpy Impact Testing Machine,Tap Density Tester,Abrasion Tester,Ultrasonic Flaw Detector,Surface Roughness Tester and other Laboratory Testing Equipment, etc. is our company's USP. 



Related Products


Solid series:DH-300,DH-600,DH-900,DA-300M,DA-600M,DA-900M,DA-1200M,DE-120M,DE-600M,DH-300M,DH-120M,DH-3000M,DH-120N

Liqulid series:DH-300L,DA-300W,DE-120W,DH-300W,DH-120W

Multi-function solid and liquid series:DH-300X,DA-300T,DE-120T,DH-300T,DH-120T

Series for rubber,tyre and shoes materials:DA-300DIN,DA-300M,DE-120DIN,DE-120M

Series for powder,magnetism,pottery and porcelain:DA-300MR,DA-300M,DE-120MR,DE-120M

Series for oil length,poriness:DA-300MQ,DA-300M,DE-120MQ,DE-120M

Series for wood,civil engineering:DA-300ML,DA-300M,DE-120ML,DE-120M

Series for cement,metal,plastic:DA-300MB,DA-300M,DE-120MB,DE-120M

Series for testing purity of gold,platinum,precious metal,tin:DH-300K.DH-600K,DA-600K,DA-900K,DA-1200K,DE-120K

Avaliable accessories:DE-40(printer),DE-20B(the components for anticorrosive liquid),DE-20A(the standard components for liquid)