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CA-5A Cement Free Calcium Oxide Analyzer

This instrument is a controller that integrates both automatic and manual operation, used for determining the free calcium oxide content in cement.

Category:

Cement Mortar Testing Equipment

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E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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CA-5A Cement Free Calcium Oxide Analyzer

Description

Product Introduction:

This instrument is a controller that integrates both automatic and manual operation, used for determining the free calcium oxide content in cement. Its design and parameters comply with the requirements of the standard GB/T 176-2017. Users may select the appropriate method according to their needs: “Determination of Free Calcium Oxide—Glycerol Method (Alternative Method)” or “Determination of Free Calcium Oxide—Ethylene Glycol Method (Alternative Method).”

Determine the sample using any one of the following test methods: “Determination of Free Calcium Oxide—Ethylene Glycol Extraction—EDTA Titration (Alternative Method).”

Summary of the test method:

1) Determination of Free Calcium Oxide—Glycerin Method (Alternative Method)

Under heating and stirring, using strontium nitrate as a catalyst, the free calcium oxide in the sample reacts with glycerol to form weakly alkaline calcium glycerolate. Phenolphthalein is used as an indicator, and the solution is titrated with a standard benzoic acid–anhydrous ethanol titrant.

2) Determination of Free Calcium Oxide—Ethylene Glycol Method (Alternative Method)

Under heating and stirring, the free calcium oxide in the sample reacts with ethylene glycol to form weakly alkaline calcium ethylene glycolate. Using phenolphthalein as an indicator, the solution is titrated with a standard benzoic acid–anhydrous ethanol titrant.

3) Determination of Free Calcium Oxide—Ethylene Glycol Extraction—EDTA Titration Method (Alternative Method)

Under heated stirring, the free calcium oxide in the sample reacts with ethylene glycol to form weakly alkaline calcium ethylene glycolate. After filtration, in a strongly alkaline solution with a pH above 13, and using triethanolamine as a masking agent, titration is performed with an EDTA standard titrant, employing a mixed indicator of calcein–methylthymol blue–phenolphthalein.

Product Features:

Fast heating rate, faster testing.

Stir evenly for more precise temperature control.

The experimental data exhibit high stability.

Automatic timed shutdown feature for hassle-free operation.

Multi-button design for simpler operation.

Implementation Standard:

GB/T 176-2017 “Methods for Chemical Analysis of Cement”

Technical Specifications:

Parameter item	Technical Specifications
Power supply	220V±10%, 50Hz
Motor	Stepless speed regulation
Power	450W
Time	1 to 99 points
Water pump	AC 220V, 50Hz, 10–12W
Average warming rate	60°C/min

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

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Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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Keywords:

CA-5A Cement Free Calcium Oxide Analyzer

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Mobile:+86-15102211717

Whatsapp:+86-15102211717
E-mail:lbt@lbt.ltd

Address:Tianjin Jinghai Economic Development Zone

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