DH-300K Digital Electronic Gold Measurer, Gold Coin Tester, Gold Coin Testing Equipment
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Product Highlights
- Lifetime Maintenance: Provides life-long maintenance support for all purchased machines.
- Fast Testing Speed: Measures purity and density in just 10 seconds with high accuracy.
- Non-Destructive Testing: Tests gold, platinum, and other metals without damaging the sample.
- High Precision: Density resolution up to 0.001g/cm3 and weight resolution up to 0.005g.
- Multi-Metal Support: Measures gold, platinum, silver, copper, tin, and other precious metals.
- OEM Customization: Available for logo printing and full customization from samples or designs.
- CE & FCC Certified: Meets international safety standards with CE and FCC certifications.
- RS-232 Interface: Includes standard RS-232 interface for PC connection and data printing.
Product Attributes
- Customization
- Available
- Warranty
- 2 Years;Life-Long Maintenance
- Type
- Gold Testing Machine
- Model NO.
- DH-300K
- Certification
- CE, FCC
- Usage
- Gold Testing Machine
- Density Resolution
- 0.001g/cm3
- Maximum Weight
- 300g
- Minimum Weight
- 0.005g
- Power Supply
- Europe Standard AC 100V - 240V
- Interface
- RS-232
- Delivery Time
- Stock
- After-Sale Service Provided
- Yes
- Testing Before Delivery
- Yes
- OEM Service
- Yes
- Transport Package
- Carton Packing
- Trademark
- DahoMeter
- Origin
- Dongguan, China
- HS Code
- 9027809900
- Production Capacity
- 300 Sets/Month
Product Images of DH-300K Digital Electronic Gold Measurer, Gold Coin Tester, Gold Coin Testing Equipment
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Product Description
DH-300K Digital Electronic Gold Measurer, Gold Coin Tester,
Gold Coin Testing Equipment
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.

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:DH-300K
Density resolution:0.001g/cm3
Maximum weight:300g
Weight resolution:0.005g
- 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
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.
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
| Model | DH-300K | DH-600K | DH-900K | DH-1200K | DA-300K | DA-600K | DA-900K | DA-1200K |
DE- |
DE-200K | |
| Maximum weight | 300g | 600g | 900g | 1200g | 300g | 600g | 900g | 1200g | 120g | 200g | |
| Weight resolution | 0.005g | 0.005g | 0.01g | 0.01g | 0.005g | 0.005g | 0.01g | 0.01g | 0.001g | 0.001g | |
| Density resolution | 0.001g/cm3 | ||||||||||
| Measuring time | 10S | ||||||||||
| 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. | ||||||||||
|
|
|
The K value of mixture of gold,silver,and copper; |
|||||||||
|
|
The purity percentage of mixture of gold,silver and copper; ; |
||||||||||
| K value range | 9K~24K | ||||||||||
| Copper and silver proportion setting | Cycle seting(default 7:3) | ||||||||||
|
Platinum |
Display value | PT percent,density value,volume | |||||||||
| PT value range | Pt600 - Pt1000 | ||||||||||
| Other Precious Metals | Function | 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 | ||||||||||
| setting | 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 | ||||||||||
| principle | 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 | ||||||||||
| power | AC 100V - 240V(Europe standard) | ||||||||||
| Main features | Simple operation,digital display,accurate measuring,stable,durable. | ||||||||||
Note:since thermometer contains mercury.it would not be allowed to be carried by air shipment.please prepare thermometer by yourselves.
Packaging

Customer Satisfaction
Please don't hesitate to contact us if you have any questions or concerns before or after your purchase. We are committed to your 100% satisfaction.
Feedback

Our Services
- 100% Competitive price we are the original manufacturer of densimeter for years, the large scale production make our products more competitive, that's the reason we are very confident to offer the most possible competitive price for the same level testing instruments in the world.
- High quality standards we have the powerful professional researching and technology team to support quality;Our quality has been proved by the good market reaction for years;Our product are built to meet the industrial standards and global standards;Every instrument get checked and approved by our QC before delivery.
- Faultless service we have the professional customer service team to provide the one to one service for you;we can help you to enjoy the one-stop service without any worries;we have the completed after-sales service policy and quality insurance policy;we guarantee instruments for one year and life-long maintenance(Gold Purity Tester for two years)
- Efficient logistics we have the stable partner to help us to deliver the goods to the any corner of the worldwide shortly.Air shipment;International express:DHL/UPS/FEDEX/TNT(5 days to 7 days)
- OEM service We are the original manufacturer of densimeter,that is verified by the third party and ****** on site;We can provide you OEM service and print your logo on the instruments.
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.

Certification
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR2421192". Items marked "" are certified.
Company Profile
Hongtuo Instrument Co., Ltd., formerly established in 2002, was mainly engaged in OEM production of density instruments. In 2010, we established DahoMeter, the exclusive brand of density meter. In the same year, we started to incorporate HongTuo Instrument Company and setup the business division of physical testing instruments. The division is specialized in the R& D, production and sales of various physical testing instruments and environmental testing instruments.
The main product lines are: Tensile testing machine, engineering plastics testing equipment, rubber and plastic testing equipment, wear abrasion testing machine, leather footwear testing machine, paper testing instrument, luggage testing equipment, batteries testing equipment, environmental testing chamber, cables and electricians testing equipment, density meters, moisture testers, and other quality control instruments.
Hongtuo Instrument is a powerful physical testing instrument service provider. The company integrates R& D, production, sales and service. It specializes in providing high quality and high reliability material testing instrument solutions. It also provides high quality OEM, ODM and CEM product foundry solutions and services for the industry.
Hongtuo's products are exquisite in workmanship, reliable in performance, high in precision, long in service life and high in quality. With high quality performance, Hongtuo actively expands domestic and foreign business, after several years of development, through Hongtuo International (Hong Kong) ), the products are exported to the United States, Britain, Sri Lanka, Myanmar, Spain, Portugal, South Korea, Australia, New Zealand, Turkey, Malaysia, Indonesia, India, Vietnam, Singapore, Russia, ...And other countries and regions.
In China, Hongtuo's instruments is widely applied in research institutes, quality inspection institutions, research laboratories, polymer rubber, tires, sports and sports equipment, wire and cable, auto parts, alloy materials, metallurgy industry, magnetic materials, ceramic industry, glass products, paper products, building materials, and other fields., etc. Product quality has been trusted and recognized by customers.
The excellent quality, and the technical service processing capability of before, during and after sales is the basis for serving the customers. Hongtuo attaches great importance to the processing capability of each link and the comprehensive protection of the customer. Up to now, Hongtuo have set up four customer service centers and after-sales service centers in Dongguan, Beijing, Shenzhen and Hangzhou, all of which are further improving high-level services, including technical consultation, solution, business processing, installation training, after-sales service, etc. Ensure can provide the more professional, accurate and reliable product solutions and service guarantees for customers.
Business philosophy
Customer first, people oriented
Innovative development, Pursuit of excellence quality and reliable service to win the achievement of the brand
Culture
Sincerity, teamwork, continuous improvement, and shared growth
Value
Integrity, progress, innovation, cooperation
Vision
Become the respected professional technology company
Spirit of service:
Fast respond, honest, reliable, professional and thoughtful
Innovative spirit:
Change breakthroughs, pursue higher precision, more reliable performance, and better operation convenience
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Floor 9, Building 2, No. 8, Chuangyi East Road, Daojiao Town, Dongguan, Guangdong, China
-
Plant Area
- 2073 square meters
-
Number of Employees
- 19
-
Registered Capital
- 10,880,000 RMB
-
Terms of Payment
- LC, T/T, PayPal, Western Union
-
International Commercial Terms(Incoterms)
- FOB, CIF, EXW
-
Average Lead Time
- Peak Season Lead Time, within 15 workdays, Off Season Lead Time, within 15 workdays
-
Nearest Port
- Shenzhen Port
-
Minimum Order Quantity
- 1 set
-
Supply Chain Partners
- 18
Our Production Capability & Technical Expertise
-
Main Products
- Testing Instrument, Density Meter, Universal Test Machine, Melt Flow Index Tester, Izod Charpy Impact Tester, HDT Tester, Notch Sampler, Environmental Test Chamber, DSC Tester, UV Aging Test Chamber
-
Production Lines
- 5
-
Production Machines
- Tapping Facility, Laser Marking Facility, Drilling Facility, Cutting Facility, Welding Facility
-
Inspection Type for Finished Products
- 100% inspection Visual inspection Function inspection
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples,Customization from Designs,Full Customization,Minor Customization,Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 2 people
-
Traceability of Raw Materials
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2010-01-06
-
Export Year
- 11 years
-
Main Markets
- North America, South America, Europe, Southeast Asia/ Mideast, Africa, East Asia(Japan/ South Korea), Australia
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 3
-
Overseas Agent/Branch
- No
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015
-
Product Certification
- CE
-
Cooperated with Fortune 500
- Yes
FAQ
- What is the warranty period for this gold tester?
- The product comes with a 2-year warranty and offers life-long maintenance support.
- How long does it take to measure the purity of gold?
- The device can measure purity, density, and K value in just 10 seconds.
- Can this machine test metals other than gold?
- Yes, it can also measure platinum, silver, copper, tin, and other precious metals.
- Is OEM service available for this product?
- Yes, we provide OEM services including logo printing and full customization options.
- What is the maximum weight capacity of the DH-300K model?
- The DH-300K model has a maximum weight capacity of 300g.
- How is the purity of gold calculated?
- It uses the Archimedes principle and water buoyancy method to calculate purity based on density.
- What is the minimum order quantity?
- The minimum order quantity is 1 set.
- Does the product come with a warranty?
- Yes, we provide a 2-year warranty for the Gold Purity Tester and life-long maintenance.
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Product Groups
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- Abrasion Testing Machine
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- Non Destructive Testing Machine
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