I am amazed how many people go to their local grow shops and buy a cheap off the wall PH meter or pen. This reading, PH, is one of the most important analytical components of any grow where you are growing championship Black Orchids at a thousand dollars a throw or more exotic plants thatrequire a precise and accurate PH. Everyone knows that a ph range of 5.8 to 6.2 is necessary to insure a successful crop. Deviate from this norm and you will find out what the words "Nutrient Block out" means. Very simply, a plant can not take in the nutrients it needs for hydroponics if the PH is too high or if it is two low. Plants stop growing out of this range. PH is as important if not more than Temperature, Humidity and lights, but it is often the most over looked reading in a grow room. This is what the United States Government uses to test the ph in streams by the Forest and National Park Service, it is used by the FDA to check PH to see at what range bacteria grows and it is used in scientific labs to arrive at accurate PH measurements. This is not your neighborhood gadget, but a professional model that is sited in Scientific studies. Just do a Google search for the Chemtrix Type Model 40 and see how many scientific papers pop up using this equipment. The readings and accruacy will not be within range unless you throw away the old probe every year and I have included a brand new probe in this auction. Don't miss this opportunity to own a professional model and stop using that kid's units they sell at the hobby stores.

Free: Included with this purcahse is a brand new PH Probe from Hong Kong, the makers of professional scientific equipment. Here is what is now included in the above auction:

This Unit is now Free and included with the above auction:

The GX-E1 single cylinder pH electrode allows you to connect BNC socket directly into the input terminal of pH meter or pH controller or any pH device that has a BNC input terminal. The cable is 1m long. This gives you the flexibility to measure a solution in a container as far as 1 meter from the device.

Once your new pH electrode probe is connected to the electrode input terminal, you will need to calibrate it using the supplied calibration (buffer) solutions. This pH electrode is economical, response fast and it comes with protective cap to ensure the safety of the bulb.

This can be used for general water applications such as drinking, domestic and rain water, swimming pools, aquariums, green houses plus its compatible with handheld meters or controllers.

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• Easy monitoring of pH accurately plus the values can be achieved within few seconds
• Replaceable pH electrode is easy to calibrate
• Comes with calibration fluids
• It is very reliable, stable and transportable
• The operation is simple and comfortable

Specification:

• Measuring Range: 0.00~14.00PH
• Resolution: 0.01PH
• Accuracy: ±0.01PH
• Operating Temperature: 0°C~50°C
• Automatic Temperature Compensation (ATC): 0°C~50°C
• Cable Length: 1m long
• Connection: 1m cable with BNC socket
• Dimensions: 150mm long x 16mm diameter
  

Operating Information:

• CALIBRATION:
  • Connect the pH electrode in the pH input terminal socket

  • Immerse the electrode in calibration solution (buffer) and wait for a few seconds

  • Once done with the calibration and readings are set, clean the electrode with fresh water. Calibration must be done every time a new pH electrode will be used.

  • Put the pH electrode into the solution that you want to measure.
    

Maintenance:

• CLEANING:
  • Clean the probe tip frequently (every 3-4 weeks) using a soft toothbrush.
  • Push the probe tip down into the wet bristles and rotate the probe 3-4 times. This will clean the inner surfaces of the electrode's tip as well as the sensing glass and reference junctions. They should be replaced once they cannot be calibrated.
  • Check calibration monthly to verify your readings and refer to your operation manual for directions and specification.

• Though our electrode is not waterproof, it can be immersed under water for long periods of time.
• Immerse only up to half past the sensor tip.
• TIPS ON HOW TO MAKE YOUR ELECTRODE LAST LONGER:
  • Probe cleaning is a very important function of preventive maintenance. Improperly cleaned probes can cause mistreatment. Probes should be cleaned and calibrated to the instrument at least once a week or it might be fouled. Fouling (encrusting of dirt due to foreign matter) reduces the effectiveness of a probe sensor, it should be cleaned promptly.
  • To meet the needs of each individual system, a preventive maintenance cleaning and calibration program should be initiated on the startup of the system. The frequency of the cleaning and calibration process is dependent on the type of foulant to be removed. In any event, we recommend that the probes be cleaned a minimum of at least once a week, and calibrated as required with two point buffer solutions.
  • Please do not subject the glass electrode to shocks or other mechanical abuse. Kindly check the glass electrode periodically to see that it is not fouled. If it is fouled, wipe with a soft cloth, taking care not to break the glass electrode. Never use abrasive cleaners on the probe or glass electrode. The sensing electrode at the base of the probe is made of glass and can break easily.

Accessories: (included)

• 2 bottles of calibration solution (pH4.003 and pH6.864)
  

Warranty: 2 years warranty

Scientific PH Monitor as used in most professional papers. Chemtrix type 40 with large display monitor. Accurate: Here is standard test calibration instructions:

5.0 STANDARD pH CALIBRATION 5.1 Three buffer capsules are available, pH 4.00, pH 7.00, and pH 10.00. Use the buffers for calibration that are closest to the pH range that you will be using. If your use will span the entire pH range, the instrument should be calibrated with two buffers and checked with a third. 5.2 Make pH buffers by dissolving one capsule per 100 ml of deionized or distilled water. After complete dissolution, the buffers should be properly stored in clearly labeled, tightly capped containers. Commercially prepared buffers can also be used. 5.3 Check meter needle position Before the calibration procedure is performed, the meter needle position should be checked when the meter is turned OFF. If the meter needle does not read zero, then the mechanical zero screw should be used to adjust the needle to read zero. 5.4 Place pH electrode in pH 7.00 buffer. Sufficient buffer should be used to immerse the pH tip. Freshly poured buffers should be used for each calibration so avoid using excessive amounts. The temperature control knob should be adjusted to 25 °C or room temperature. 5.5 Make sure the front panel switch is set on pH and the expanded model is set to NORM. 5.6 Use the SET knob to adjust the analog needle to read a pH of 7.00. 5.7 Rinse the electrode with distilled water and carefully blot dry, using lint-free paper. CAUTION Do not wipe the electrode. Wiping can cause static electrical charges which can result in faulty readings. 5.8 Immerse the electrode in a second standard buffer, either pH 4.00 or pH 10.00. Allow time for equilibration. 5.9 Use the SLOPE screw to adjust the readout to read exactly 4.00 or 10.00 depending on the second buffer used. 5.10 Rinse the electrode and blot dry. The meter is now ready for use in the pH mode. NOTE The calibration of a pH meter is not permanent. It should be done on a regular basis and any time the pH reading response becomes slow or erratic

A brand new probe is inclueded with this auction

This is a large unit measuring a full 6 1/2 inches high by 8 inches wide and 6 inches deep.

bid with confidence, I have a 100% buyer feedback