A powder sample is obtained from hardened concrete by drilling or grinding (Profile Grinder) or obtained from the fresh concrete. The sample is mixed with a specific amount of extraction liquid that is designed to remove disturbing ions, such as sulfide ions, and to extract the chloride ions in the sample.  After 5 minutes, a chloride ion selective electrode is submerged into the solution to determine the amount of chloride ion by means of a calibrated chart, which is expressed as percentage of concrete mass.

Two methods can be used: The RCT (Rapid Chloride Test) is used to determine the amount of acid-soluble chlorides. The RCTW (Rapid Chloride Test Water) is used to determine the amount of water-soluble chlorides.

Rapid Chloride Content Test.

The test results can be used for:

• Establishing the chloride ion profile for service life estimation
• Establishing the depth of removal of a chloride ion contaminated surface layer 
• Diagnosing a structure for corrosion activity, in combination with other test systems such the Mini Great Dane, the GalvaPulse and the Deep Purple or Rainbow Indicators 
• Monitoring the chloride ion content during electrochemical removal of chlorides 
• Measuring the chloride ion content of fresh concrete or its constituents.

Rapid Chloride Content Test.

• Input Impedance: 1,012 Ohm
• Battery Type / Life: 1 x 9V / approx. 150 hours 
• Auto-off after 20 minutes of non-use 
• Environment: 0 to 50°C; RH max 95%
• Temperature and pH measuring capacity (pH electrode and temperature probe are sold separately) 

RCT-500 Kit

Includes:

Item	Order #
RCT chloride selective electrode	RCT-770
Electrometer for mV, pH and ºC	RCT-990
Electrode wetting agent, 80 mL, with spout	RCT-1000
Distilled water, spray bottle	RCT-1001
Polishing strips for electrode	RCT-1002
Plastic bags for powder sampling	RCT-1003
Powder collecting bowl	RCT-1004
Powder collecting pan, circular	RCT-1005
Powder collecting square w. clip	RCT-1006
Adjustable pliers	RCT-1007
Set of anchoring tools	RCT-1008
Mandrel	RCT-1009
Hammer	RCT-1010
Powder compression pin	RCT-1011
Powder weighing ampoules, 6 pcs	RCT-1012
Digital pocket balance, 115 x 0.01 g	RCT-2700
Calibration liquid, 0.005 % Cl–	RCT-1013
Calibration liquid, 0.020 % Cl–	RCT-1014
Calibration liquid, 0.050 % Cl–	RCT-1015
Calibration liquid, 0.500 % Cl–	RCT-1016
Cleaning tissues	RCT-1017
Calibration sheets for hardened concrete	RCT-1018
Calibration sheets for fresh concrete	RCT-1019
Rubber ball dust remover	RCT-1020
Pencil and ruler	RCT-1021
Measuring tape	RCT-1022
Extraction vials, hardened concrete, 10 pcs	RCT-1023
Manual	RCT-1024
RCT testing cases and applications, binder	RCT-1025
Attaché case	RCT-1026

Consumables

Extraction liquids for RCT testing for acid-soluble chlorides in hardened concrete or fresh concrete:

Extraction liquids for RCTW testing for water-soluble chlorides in hardened concrete or fresh concrete:

To be ordered separately

• Range: 0.0 to 12.0 pH • Temperature: -5.0 to 70.0°C • Meter resolution: 0.01 pH • Meter accuracy: ±0.01 pH	• Range: -20.0 to 120.0°C / -4.0 to 248.0°F • Meter resolution: 0.1°C / 0.1°F • Meter accuracy: ±0.4°C / ±0.8°F

*According to ENV- 197-1

Cement type* Known amounts of Cl– Portland cement 0.023 % 0.071 % 0.328 % Fly ash cement 0.020 % 0.057 % 0.244 % Slag cement 0.020 % 0.056 % 0.244 %

• Technical data sheet
• RCT Certificate
• Publications

• AASHTO T 260: “Standard Method of Test for Sampling and Testing for Chloride Ion in Concrete and Concrete Raw Materials”
• ASTM C114: “Standard Test Methods for Chemical Analysis of Hydraulic Cement”
• ASTM C1152: Standard Test Method for Acid-Soluble Chloride in Mortar and Concrete
• ASTM C1218: Standard Test Method for Water-Soluble Chloride in Mortar and Concrete
• EN 14629: “Products and systems for protection and repair of concrete structures – Test methods – Determination of chloride content in cured concrete”