Product Search

    SEARCH NOW FOR ALL YOUR AQUAMETRIX BY WATER ANALYTICS SOLUTIONS

    Radwell is here to supply you with all your plant floor needs.

    Radwell is not an authorised distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorisation by any rights holder.

    Filter Results
    Results 951-1000 of 990.
    AQUAMETRIX BY WATER ANALYTICS AM3401HT1-020

    AQUAMETRIX BY WATER ANALYTICS

    AM3401HT1-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), EXTENDED LENGTH SENSOR FOR USE WITH HOT TAP BALL VALVE, ...
    €609.16 Price with VAT: €724.90 Buy Surplus As Low As €366.21 Price with VAT: €435.79
    €366.21 Price with VAT: €435.79
    AQUAMETRIX BY WATER ANALYTICS AM34001K2-020

    AQUAMETRIX BY WATER ANALYTICS

    AM34001K2-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 0.01 (0.2-10MICROSIEMENS PER CENTIMETER), KYNAR COMPRESSION FITTING, 300NTC TEMPERATURE DEVICE, S ...
    €482.32 Price with VAT: €573.97 Buy Surplus As Low As €289.39 Price with VAT: €344.38
    €289.39 Price with VAT: €344.38
    AQUAMETRIX BY WATER ANALYTICS AM121S3-020

    AQUAMETRIX BY WATER ANALYTICS

    AM121S3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 1 (100-5,000 MICROSIEMENS PER CENTIMETER), 316SS COMPRESSION FITTING, 3000NTC TEMPERATURE DEVICE, ...
    €549.31 Price with VAT: €653.68 Buy Surplus As Low As €329.59 Price with VAT: €392.21
    €329.59 Price with VAT: €392.21
    AQUAMETRIX BY WATER ANALYTICS AM121HT4-020

    AQUAMETRIX BY WATER ANALYTICS

    AM121HT4-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 1 (100-5,000 MICROSIEMENS PER CENTIMETER), EXTENDED LENGTH SENSOR FOR USE WITH HOT TAP BALL VALVE ...
    €619.88 Price with VAT: €737.65 Buy Surplus As Low As €372.46 Price with VAT: €443.23
    €372.46 Price with VAT: €443.23
    AQUAMETRIX BY WATER ANALYTICS AM1210S3-020

    AQUAMETRIX BY WATER ANALYTICS

    AM1210S3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 10 (ONLY AM12, AM34) (1-50MS/CM), 316SS COMPRESSION FITTING, 3000NTC TEMPERATURE DEVICE, STANDARD ...
    €549.31 Price with VAT: €653.68 Buy Surplus As Low As €329.59 Price with VAT: €392.21
    €329.59 Price with VAT: €392.21
    AQUAMETRIX BY WATER ANALYTICS AM1210HT4-020

    AQUAMETRIX BY WATER ANALYTICS

    AM1210HT4-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 10 (ONLY AM12, AM34) (1-50MS/CM), EXTENDED LENGTH SENSOR FOR USE WITH HOT TAP BALL VALVE, PT100RT ...
    €619.88 Price with VAT: €737.65 Buy Surplus As Low As €372.46 Price with VAT: €443.23
    €372.46 Price with VAT: €443.23
    AQUAMETRIX BY WATER ANALYTICS AM1201S1-020

    AQUAMETRIX BY WATER ANALYTICS

    AM1201S1-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), 316SS COMPRESSION FITTING, PT1000RTD TEMPERATURE DEVICE ...
    €510.01 Price with VAT: €606.92 Buy Surplus As Low As €306.37 Price with VAT: €364.57
    €306.37 Price with VAT: €364.57
    AQUAMETRIX BY WATER ANALYTICS AM1201K3-020

    AQUAMETRIX BY WATER ANALYTICS

    AM1201K3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), KYNAR COMPRESSION FITTING, 3000NTC TEMPERATURE DEVICE, ...
    €454.64 Price with VAT: €541.02 Buy Surplus As Low As €273.32 Price with VAT: €325.25
    €273.32 Price with VAT: €325.25
    AQUAMETRIX BY WATER ANALYTICS AM3401HT2-020

    AQUAMETRIX BY WATER ANALYTICS

    AM3401HT2-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), EXTENDED LENGTH SENSOR FOR USE WITH HOT TAP BALL VALVE, ...
    €648.46 Price with VAT: €771.67 Buy Surplus As Low As €389.43 Price with VAT: €463.42
    €389.43 Price with VAT: €463.42
    AQUAMETRIX BY WATER ANALYTICS AM3410K3-020

    AQUAMETRIX BY WATER ANALYTICS

    AM3410K3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 10 (ONLY AM12, AM34) (1-50MS/CM), KYNAR COMPRESSION FITTING, 3000NTC TEMPERATURE DEVICE, STANDARD ...
    €482.32 Price with VAT: €573.97 Buy Surplus As Low As €289.39 Price with VAT: €344.38
    €289.39 Price with VAT: €344.38
    AQUAMETRIX BY WATER ANALYTICS AM3410K1-020

    AQUAMETRIX BY WATER ANALYTICS

    AM3410K1-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 10 (ONLY AM12, AM34) (1-50MS/CM), KYNAR COMPRESSION FITTING, PT1000RTD TEMPERATURE DEVICE, STANDA ...
    €442.13 Price with VAT: €526.14 Buy Surplus As Low As €265.28 Price with VAT: €315.68
    €265.28 Price with VAT: €315.68
    AQUAMETRIX BY WATER ANALYTICS AM3401S2-020

    AQUAMETRIX BY WATER ANALYTICS

    AM3401S2-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), 316SS COMPRESSION FITTING, 300NTC TEMPERATURE DEVICE, S ...
    €576.11 Price with VAT: €685.57 Buy Surplus As Low As €345.67 Price with VAT: €411.34
    €345.67 Price with VAT: €411.34
    AQUAMETRIX BY WATER ANALYTICS AM3401K4-020

    AQUAMETRIX BY WATER ANALYTICS

    AM3401K4-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), KYNAR COMPRESSION FITTING, PT100RTD TEMPERATURE DEVICE, ...
    €482.32 Price with VAT: €573.97 Buy Surplus As Low As €289.39 Price with VAT: €344.38
    €289.39 Price with VAT: €344.38
    AQUAMETRIX BY WATER ANALYTICS AM3401K1-020

    AQUAMETRIX BY WATER ANALYTICS

    AM3401K1-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), KYNAR COMPRESSION FITTING, PT1000RTD TEMPERATURE DEVICE ...
    €442.13 Price with VAT: €526.14 Buy Surplus As Low As €265.28 Price with VAT: €315.68
    €265.28 Price with VAT: €315.68
    AQUAMETRIX BY WATER ANALYTICS AM3401HT3-020

    AQUAMETRIX BY WATER ANALYTICS

    AM3401HT3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), EXTENDED LENGTH SENSOR FOR USE WITH HOT TAP BALL VALVE, ...
    €648.46 Price with VAT: €771.67 Buy Surplus As Low As €389.43 Price with VAT: €463.42
    €389.43 Price with VAT: €463.42
    AQUAMETRIX BY WATER ANALYTICS AM34001K3-050

    AQUAMETRIX BY WATER ANALYTICS

    AM34001K3-050

    AM SERIES - STAINLESS STEEL CONDUCTIVITY SENSOR
    €564.50 Price with VAT: €671.75 Buy Surplus As Low As €339.41 Price with VAT: €403.90
    €339.41 Price with VAT: €403.90
    Repair Yours Contact Us
    AQUAMETRIX BY WATER ANALYTICS AM34001HT4-020

    AQUAMETRIX BY WATER ANALYTICS

    AM34001HT4-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 0.01 (0.2-10MICROSIEMENS PER CENTIMETER), EXTENDED LENGTH SENSOR FOR USE WITH HOT TAP BALL VALVE, ...
    €648.46 Price with VAT: €771.67 Buy Surplus As Low As €389.43 Price with VAT: €463.42
    €389.43 Price with VAT: €463.42
    AQUAMETRIX BY WATER ANALYTICS AM121K2-020

    AQUAMETRIX BY WATER ANALYTICS

    AM121K2-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 1 (100-5,000 MICROSIEMENS PER CENTIMETER), KYNAR COMPRESSION FITTING, 300NTC TEMPERATURE DEVICE, ...
    €454.64 Price with VAT: €541.02 Buy Surplus As Low As €273.32 Price with VAT: €325.25
    €273.32 Price with VAT: €325.25
    AQUAMETRIX BY WATER ANALYTICS AM121HT1-020

    AQUAMETRIX BY WATER ANALYTICS

    AM121HT1-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 1 (100-5,000 MICROSIEMENS PER CENTIMETER), EXTENDED LENGTH SENSOR FOR USE WITH HOT TAP BALL VALVE ...
    €581.47 Price with VAT: €691.95 Buy Surplus As Low As €349.24 Price with VAT: €415.59
    €349.24 Price with VAT: €415.59
    AQUAMETRIX BY WATER ANALYTICS AMB3401HT3-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB3401HT3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), EX ...
    €676.15 Price with VAT: €804.62 Buy Surplus As Low As €406.40 Price with VAT: €483.62
    €406.40 Price with VAT: €483.62
    AQUAMETRIX BY WATER ANALYTICS AM3450K2-020

    AQUAMETRIX BY WATER ANALYTICS

    AM3450K2-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 50 (ONLY AM34) (5-250MS/CM), KYNAR COMPRESSION FITTING, 300NTC TEMPERATURE DEVICE, STANDARD 20FT ...
    €482.32 Price with VAT: €573.97 Buy Surplus As Low As €289.39 Price with VAT: €344.38
    €289.39 Price with VAT: €344.38
    AQUAMETRIX BY WATER ANALYTICS AM34001S2-020

    AQUAMETRIX BY WATER ANALYTICS

    AM34001S2-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR, CELL CONSTANT 0.01 (0.2-10MICROSIEMENS PER CENTIMETER), 316SS COMPRESSION FITTING, 300NTC TEMPERATURE DEVICE, S ...
    €576.11 Price with VAT: €685.57 Buy Surplus As Low As €345.67 Price with VAT: €411.34
    €345.67 Price with VAT: €411.34
    AQUAMETRIX BY WATER ANALYTICS AM121K4-020

    AQUAMETRIX BY WATER ANALYTICS

    AM121K4-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 1 (100-5,000 MICROSIEMENS PER CENTIMETER), KYNAR COMPRESSION FITTING, PT100RTD TEMPERATURE DEVICE ...
    €454.64 Price with VAT: €541.02 Buy Surplus As Low As €273.32 Price with VAT: €325.25
    €273.32 Price with VAT: €325.25
    AQUAMETRIX BY WATER ANALYTICS AM121HT3-020

    AQUAMETRIX BY WATER ANALYTICS

    AM121HT3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 1/2IN SENSOR, CELL CONSTANT 1 (100-5,000 MICROSIEMENS PER CENTIMETER), EXTENDED LENGTH SENSOR FOR USE WITH HOT TAP BALL VALVE ...
    €619.88 Price with VAT: €737.65 Buy Surplus As Low As €372.46 Price with VAT: €443.23
    €372.46 Price with VAT: €443.23
    AQUAMETRIX BY WATER ANALYTICS AMB341S1-025

    AQUAMETRIX BY WATER ANALYTICS

    AMB341S1-025

    AM SERIES - STAINLESS STEEL CONDUCTIVITY SENSOR
    €593.97 Price with VAT: €706.83 Buy Surplus As Low As €356.38 Price with VAT: €424.10
    €356.38 Price with VAT: €424.10
    Repair Yours Contact Us
    AQUAMETRIX BY WATER ANALYTICS AMB341HT4-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB341HT4-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 1 (100-5,000 MICROSIEMENS PER CENTIMETER), E ...
    €676.15 Price with VAT: €804.62 Buy Surplus As Low As €406.40 Price with VAT: €483.62
    €406.40 Price with VAT: €483.62
    AQUAMETRIX BY WATER ANALYTICS AMB341HT2-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB341HT2-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 1 (100-5,000 MICROSIEMENS PER CENTIMETER), E ...
    €676.15 Price with VAT: €804.62 Buy Surplus As Low As €406.40 Price with VAT: €483.62
    €406.40 Price with VAT: €483.62
    AQUAMETRIX BY WATER ANALYTICS AMB3401S4-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB3401S4-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), 31 ...
    €603.80 Price with VAT: €718.52 Buy Surplus As Low As €362.64 Price with VAT: €431.54
    €362.64 Price with VAT: €431.54
    AQUAMETRIX BY WATER ANALYTICS AMB3401S1-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB3401S1-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), 31 ...
    €564.50 Price with VAT: €671.75 Buy Surplus As Low As €339.41 Price with VAT: €403.90
    €339.41 Price with VAT: €403.90
    AQUAMETRIX BY WATER ANALYTICS AMB3401K3-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB3401K3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), KY ...
    €510.01 Price with VAT: €606.92 Buy Surplus As Low As €306.37 Price with VAT: €364.57
    €306.37 Price with VAT: €364.57
    AQUAMETRIX BY WATER ANALYTICS AMB3401K1-025

    AQUAMETRIX BY WATER ANALYTICS

    AMB3401K1-025

    AM SERIES - STAINLESS STEEL CONDUCTIVITY SENSOR
    €499.30 Price with VAT: €594.16 Buy Surplus As Low As €300.11 Price with VAT: €357.13
    €300.11 Price with VAT: €357.13
    Repair Yours Contact Us
    AQUAMETRIX BY WATER ANALYTICS AMB34001S4-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB34001S4-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 0.01 (0.2-10MICROSIEMENS PER CENTIMETER), 31 ...
    €603.80 Price with VAT: €718.52 Buy Surplus As Low As €362.64 Price with VAT: €431.54
    €362.64 Price with VAT: €431.54
    AQUAMETRIX BY WATER ANALYTICS AMB34001S2-025

    AQUAMETRIX BY WATER ANALYTICS

    AMB34001S2-025

    AM SERIES - STAINLESS STEEL CONDUCTIVITY SENSOR
    €631.49 Price with VAT: €751.47 Buy Surplus As Low As €379.61 Price with VAT: €451.73
    €379.61 Price with VAT: €451.73
    Repair Yours Contact Us
    AQUAMETRIX BY WATER ANALYTICS AMB34001K1-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB34001K1-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 0.01 (0.2-10MICROSIEMENS PER CENTIMETER), KY ...
    €471.61 Price with VAT: €561.21 Buy Surplus As Low As €283.14 Price with VAT: €336.94
    €283.14 Price with VAT: €336.94
    AQUAMETRIX BY WATER ANALYTICS AMB34001HT3-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB34001HT3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 0.01 (0.2-10MICROSIEMENS PER CENTIMETER), EX ...
    €676.15 Price with VAT: €804.62 Buy Surplus As Low As €406.40 Price with VAT: €483.62
    €406.40 Price with VAT: €483.62
    AQUAMETRIX BY WATER ANALYTICS AM3450HT4-050

    AQUAMETRIX BY WATER ANALYTICS

    AM3450HT4-050

    AM SERIES - STAINLESS STEEL CONDUCTIVITY SENSOR
    €730.63 Price with VAT: €869.45 Buy Surplus As Low As €438.56 Price with VAT: €521.88
    €438.56 Price with VAT: €521.88
    Repair Yours Contact Us
    AQUAMETRIX BY WATER ANALYTICS AMB3401S3-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB3401S3-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), 31 ...
    €603.80 Price with VAT: €718.52 Buy Surplus As Low As €362.64 Price with VAT: €431.54
    €362.64 Price with VAT: €431.54
    AQUAMETRIX BY WATER ANALYTICS SPX-100

    AQUAMETRIX BY WATER ANALYTICS

    SPX-100

    LOW FLOW SENSOR, POLYPRO, 1" FNPT INLET/OUTLET, RATED 0.5-40 GPM
    €580.86 Price with VAT: €691.22 Buy Surplus As Low As €331.92 Price with VAT: €394.98
    €331.92 Price with VAT: €394.98
    Repair Yours Contact Us
    AQUAMETRIX BY WATER ANALYTICS AM-LL-3-120

    AQUAMETRIX BY WATER ANALYTICS

    AM-LL-3-120

    LEVEL CONTROLLER, CONTACTING LIQUID LEVEL CONTROLLER, AC BASED CONDUCTIVITY, SPDT RELAY, 10 KILOOHMS MAX SENSITIVITY, DOUBLE POLE, DOUBLE THROW, RELAY TIMER ADJUSTMENT, 120 VAC
    €602.94 Price with VAT: €717.49 Buy Surplus As Low As €361.94 Price with VAT: €430.71
    €361.94 Price with VAT: €430.71
    Repair Yours Contact Us
    AQUAMETRIX BY WATER ANALYTICS AMB3401HT4-020

    AQUAMETRIX BY WATER ANALYTICS

    AMB3401HT4-020

    STAINLESS STEEL CONDUCTIVITY SENSORS, AM SERIES, STAINLESS STEEL 3/4IN SENSOR WITH STAINLESS STEEL FITTING FOR BOILER APPLICATIONS, CELL CONSTANT 0.1 (10-500 MICROSIEMENS PER CENTIMETER), EX ...
    €676.15 Price with VAT: €804.62 Buy Surplus As Low As €406.40 Price with VAT: €483.62
    €406.40 Price with VAT: €483.62
    Previous
    10 11 12 13 14 15 16 17 18 19 20