$200.00 - $400.00
Min. Order : 1 Set

Laboratory Cement Free Calcium Oxide Tester, Cement Dissociative Calcium Oxide Quick Test Meter

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Quick Details

Port: Shenzhen
Payment Terms: L/C,Western Union,D/P,D/A,T/T,MoneyGram,Cement Free Calcium Oxide Tester support any payment way
Supply Ability: 100 Set/Sets per Month
Warranty: 1 year
Place of Origin: Guangdong China
Delivery time: in stock, delivery anytime
Motor: stepless speed regulation
Extraction time: 3 min
Time: 1~99 minutes
Power supply: 220V
Model Number: ZT-1805
Certification: CE
Customized support: OEM
Brand Name: Zotai
Average heating rate: 60 ℃ / min
Accuracy: 0.046%
Product name: Cement Free Calcium Oxide Tester
Power: 450W,Electronic
Packaging Detail: Cement Free Calcium Oxide Tester package: 1. Plastic wrap moisture 2. Fixed on the bottom of the wooden box 3. Standard export wooden box packaging, reinforcement
Package Preview: https://sc04.alicdn.com/kf/Hfdb922cbf54f46069374392ac58a48fdu.jpg_640x640.jpg,https://sc04.alicdn.com/kf/H4df3bf5790bb478aa17c1c34ffc4705cV.jpg_640x640.jpg
Dongguan Zotai Instrument Technology Co., Ltd.
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Manufacturer, Trading Company
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US$ 10,000+
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Cement Free Calcium Oxide Tester

Product Description

Machine Summary:

Cement free calcium oxide rapid measuring instrument is the main index to measure the quality of cement and the thermal system of clinker calcination. The calcium oxide rapid measuring instrument adopts the direct titration method of glycol extraction benzoic acid. Under specific conditions, it takes 3 minutes to quickly and accurately determine the free calcium oxide content.


It can be used in production control of cement plant, building materials, scientific research units, teaching buildings of colleges and universities, etc.


Technical Parameters:


the standard deviation is 0.046%

Extraction time

3 min

Power supply voltage

220 V, 50 Hz


stepless speed regulation




1-99 minutes

Average heating rate

60 ℃ / min


Working Principle:

After ethylene glycol reacts with free calcium oxide in cement clinker, the conductivity of the solution is proportional to the content of free calcium oxide. The content of free calcium oxide in cement clinker is indirectly reflected by the measurement of conductivity. The instrument needs to be calibrated to achieve the purpose of accurate measurement.

The reaction of organic solution glycol with free calcium oxide in cement clinker at high temperature was studied: (CH2OH)2+CaO→(CH2O)2Ca+H2O

The calcium glycol formed by the above reaction is dissociated in glycol according to the following formula: (CH2O)2Ca→(CH2O)22-Ca+Ca2+

Ethylene glycol and calcium ions conduct electricity in solution, and the degree of conductivity is related to the content of free calcium oxide. The content of free calcium oxide in cement clinker can be indirectly measured by measuring the conductivity of solution.

In the use of the instrument, the cleanliness of the electrode has a great influence on the accuracy of the measurement results. Therefore, the conductive electrode should be kept clean during the use of the instrument.


Packaging & Shipping

Test Equipment Package.jpg 

Our Services

1. Zotai Service:

If you face any problems in future during testing process we promise we will give you a reply within 48 hours and solution provide within 3 working days. We can offer operation video and English operation muanual. We can provide operation video for machines.

2. Onsite Service:

A. Device installation;

B. Equipment Operation Test Technology training;

C. Equipment Calibration;

D. Daily maintenance and maintenance of equipment

3. Free technical training for visiting factories

4. 24-hour Online contact

5. Free software upgrades

6. Free information:

A.Product Instruction;

B.Product operation instruction/video;

C.Experiment Test (test application, test report)

7. Device Problem Handling:

A. Social media 24 hours online communication;

B. Mail Seamless Docking;

C. Video Conferencing;

D. Artificial free door-to-door service

Company Information

Dongguan Zotai Instrument Technology Co., Ltd. specializes in rubber and plastic testing machine, metal detector, textile testing machine and shoe testing machine for more than 10 years. With advanced technology, excellent product quality and best customer service, the products are exported to more than 100 products. Countries and regions have won praises from customers around the world.
We have a professional design team that can customize individual products according to customer requirements.
If you have any questions or concerns, the sales and after-sales service department will respond to you within 24 hours.



1.Are your company a trading one or a factory?

Factory + trade (integration), 10 years focusing on test instruments field, 8 years exporting experience.

OEM is also acceptable for us.

2.How to choose the most suitable products?

Our professional team will give you the best suggestion as long as you tell us what kind of test you need to do and the required specification.

3.Do you accept customization service?

Yes, of course, we can not only offer standard machines, but also customized machines according to your request. Don’t hesitate to tell us your requirement, we will try our best to meet your needs.

4.How about your warranty?

Generally, our warranty is one year. Within the warranty period, we can offer technique support and part parts change, necessarily, our engineers may go to your place for better service.

5.How about the packing for machine, is it safely protected during transportation?

Our machine is packed by standard export wooden box, it won’t be damaged. We’ve delivered many testing machines abroad by sea or by air without damage.

6.What is the order process?

Inquiry - quotation - communication - order confirming - deposit payment - production - testing and debugging - balance payment - packing - delivery - customer receiving - after service.