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  • Final Flush Green Apple 1 L

    Final Flush is a flushing agent designed to correct overfeeding issues during crop production and also eliminate excess salts from the medium during the final stages of plant growth. Salinity can become a serious issue for those gardeners growing in containers and recirculation systems. Salt buildup can cause problems for growing plants and bitterness in harvested fruit.

    The organic acids in this product help knock nutrients out from around the rhizosphere. Removing these easily accessible food sources causes the plant to search for new food sources.

    In many cases, plants have tucked away unconverted salts into surrounding tissues. This can lead to bitter-tasting produce. As the medium EC and nutrient availability is lowered, the plant takes any unconverted salts within its structure and properly metabolizes them which results in a cleaner harvest.

    SKU:
    GTFFGA1L

    Retail: $15.19

    Special Price $14.19

  • Milwaukee Instruments 1413 mS Packet case of 25

     Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, insert the tester or electrode into the sachet and calibrate. Sachets are sold in boxes of 25 pieces.
    SKU:
    MI10031P

    Retail: $25.00

    Special Price $23.75

  • Hanna Cal Sol 1380 parts per million, 2 oz

    SKU:
    PNCASL

    Retail: $10.13

    Special Price $5.68

  • Milwaukee 1382 PPM Solution 220ml

    Available in 220ml bottles and 20ml sachets. Traditional buffersolutions are packed in 220ml leak-proof bottles and are recommendedfor lab application. Sachets are sealed against light and air and areideal for on-the-spot calibration. Simply open, insert the tester orelectrode into the sachet and calibrate. Sachets are sold in boxes of25 pieces.
    SKU:
    MIMA9062

    Retail: $10.95

    Special Price $10.40

  • Milwaukee PH 7.0 Solution 220ml

    Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, insert the tester or electrode into the sachet and calibrate. Sachets are sold in boxes of 25 pieces.
    SKU:
    MIMA9007

    Retail: $10.95

    Special Price $10.40

  • Milwaukee PH 4.0 Solution 220ml

     Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, insert the tester or electrode into the sachet and calibrate. Sachets are sold in boxes of 25 pieces.
    SKU:
    MIMA9004

    Retail: $10.95

    Special Price $10.40

  • 1500 ppm Packet case of 25

    This item is sachets

    Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, insert the tester or electrode into the sachet and calibrate. Sachets are sold in boxes of 25 pieces.

    SKU:
    MI10442P

    Retail: $29.61

    Special Price $23.75

  • 1382 TDS Solution case of 25

    Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, insert the tester or electrode into the sachet and calibrate. Sachets are sold in boxes of 25 pieces.
    SKU:
    MI10032P

    Retail: $29.61

    Special Price $23.75

  • PH7 Solution, 20ml, case of 25

    This item is sachets

    Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, insert the tester or electrode into the sachet and calibrate. Sachets are sold in boxes of 25 pieces.

    SKU:
    MI10007P

    Retail: $26.86

    Special Price $23.75

  • Bluelab 7.0 500ml Calibration Solution

    The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. These solutions are manufactured specific to the calibration process and referenced to high laboratory standards by Bluelab. They are required for the calibration of pH meters, pH monitors and controllers. Regular cleaning and calibrating of pH measuring equipment ensures accurate readings. Bluelab's EC/CF equipment does not need calibrating, as they are all factory calibrated at Bluelab. The CF27.7 solution is used as a reference to ensure you have adequately cleaned the EC/CF probe.

    SKU:
    732896

    Retail: $13.60

    Special Price $10.45

  • Bluelab 4.0 500ml Calibration Solution

    The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. These solutions are manufactured specific to the calibration process and referenced to high laboratory standards by Bluelab. They are required for the calibration of pH meters, pH monitors and controllers. Regular cleaning and calibrating of pH measuring equipment ensures accurate readings. Bluelab's EC/CF equipment does not need calibrating, as they are all factory calibrated at Bluelab. The CF27.7 solution is used as a reference to ensure you have adequately cleaned the EC/CF probe.

    SKU:
    732898

    Retail: $13.60

    Special Price $10.45

  • Hanna 12880 S/cm Calib Solution, 25x20mL, case of 25

    12,880 S/cm (mho/cm)

    SKU:
    HI70030P

    Retail: $32.00

    Special Price $23.91

  • HM Digital pH 7.0 Buffer Solution, 20 ml sachets, box of 20

    20 ml pack of pH 7 buffer solution will you calibrate your probe to neutral.  Do this before calibrating to 4 pH.

    SKU:
    HMDPHP7

    Retail: $25.00

    Special Price $21.25

  • Oakton Buffer 7.00 pH 500 ml calibration solution

    Oakton® buffers for meters with 0.01 resolution are standardized against NIST-certified pH references within 0.01 pH at 77°F (25°C). Store buffers away from direct sunlight.

    SKU:
    OK0065404

    Retail: $21.50

    Special Price $20.42

  • Oakton Buffer 4.01 pH 500ml Calibration solution

    Oakton® buffers for meters with 0.01 resolution are standardized against NIST-certified pH references within 0.01 pH at 77°F (25°C). Store buffers away from direct sunlight.

    SKU:
    OK0065400

    Retail: $21.50

    Special Price $20.42

  • Oakton 1413 US Solution 500 ml

    Standards have KCl, NaCl and 442 conversions printed on the bottle for ease of use. Temperature corrections are printed on the bottle, with the certified values listed in the tables, accurate to within ±0.5% and are referenced to 25°C.

    SKU:
    OK0065318

    Retail: $19.95

    Special Price $15.96

  • PH4 Solution, 20ml, case of 25

    This item is sachets

    Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, insert the tester or electrode into the sachet and calibrate. Sachets are sold in boxes of 25 pieces.

    SKU:
    MI10004P

    Retail: $29.61

    Special Price $23.75

  • Hanna 1000ppm Calibration Solution

    NaCl calibration solution 1000 ppm comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner.
    SKU:
    HMDC1000

    Retail: $6.50

    Special Price $6.17

  • Hanna HI7061 Electrode Cleaner 1Pint 7061

    General Purpose
    SKU:
    HI7061L

    Retail: $19.95

    Special Price $18.86

  • Hanna pH 4.01 Calibration Solution, 25x20mL, case of 25

    Hanna's Buffer solutions are made from established formulas and are standardized with a pH meter that is calibrated to NBS/NIST primary standard buffer solutions. The 20 mL sachets are ideal for infrequent calibrations while for heavy-duty applications, you can choose from the popular 230 mL, 1 liter or 1 gallon containers. Now the pH 4 buffers carry lot #, expiry date as well as pH/C chart on every bottle. HI 7004L/C and HI 8004L/C are also supplied with an analysis certificate.
    SKU:
    HI70004P

    Retail: $34.25

    Special Price $23.91

  • Hanna Cal Check Solution - case of 25

    These sachets are for use with the Hanna HI9813-6 Gro'Chek Portable pH/TDS/EC/Temp Meter. The Cal-Check feature of this meter utilizes the Cal-Check Solution in order to determine if the probe is in need of cleaning or replacement.

    The sachets should only be used once, then discarded, in order to avoid contamination and improper readings.

    SKU:
    HI50021

    Retail: $46.00

    Special Price $33.64

  • Bluelab 4.0 250ml Calibration Solution

    The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. These solutions are manufactured specific to the calibration process and referenced to high laboratory standards by Bluelab. They are required for the calibration of pH meters, pH monitors and controllers. Regular cleaning and calibrating of pH measuring equipment ensures accurate readings. Bluelab's EC/CF equipment does not need calibrating, as they are all factory calibrated at Bluelab. The CF27.7 solution is used as a reference to ensure you have adequately cleaned the EC/CF probe.
    SKU:
    732897

    Retail: $11.80

    Special Price $7.74

  • General Hydroponics 1500 ppm Calibration Solution 1 Quart

    General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.

    SKU:
    GH1572

    Retail: $21.50

    Special Price $17.20

  • General Hydroponics 1500 ppm Calibration Solution 8 oz

    General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.

    SKU:
    GH1571

    Retail: $11.10

    Special Price $7.79

  • General Hydroponics pH 7.01 Calibration Solution 1 Quart

    General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.
    SKU:
    GH1552

    Retail: $21.50

    Special Price $17.20

  • General Hydroponics pH 7.01 Calibration Solution 8 oz

    General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.
    SKU:
    GH1551

    Retail: $10.80

    Special Price $7.16

  • General Hydroponics pH 4.01 Calibration Solution 1 Quart

    General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.
    SKU:
    GH1542

    Retail: $21.50

    Special Price $17.20