It is necessary to calibrate PH meters and suggested that this is done on a weekly basis.
Use the essentials buffer 4 solution to calibrate PH meters. For successful and accurate calibration insure the solution is at room temperature. 

Essentials pH buffers are a known solution of a certain pH value, in this case the value is 4, designed to test the accuracy of pH meters used to measure the pH of a nutrient solution. Use to Calibrate your EC/CF meter every week to ensure maximum accuracy. Features CRC Cap for Safety.

Bio·Up has been designed especially for the organic farming sector. Correcting pH in a natural way is essential for plants to absorb the maximum amount of nutrients. The natural formulation of Bio·Up enables fast pH adjusting of any type of substrate and for any type of crop, without harming the soil micro life.

Bio·Up is a humic acids based formulation harvested from natural sources, specially designed for the growers that want to keep everything organic in their grow, from seed to harvest. It is designed to work perfectly with the Biobizz nutrients and can be used in every watering. It is suitable to be used during both the growing and the flowering period.

Why choose Bio·Up?

Bio·Up can be used both during the vegetative and flowering periods, in every watering, and in combination with every Biobizz substrate or liquid product.
Bio·Up doesn’t contain any strong acids. This means that this 100% organic pH regulator doesn’t harm the substrate micro life.

Bio·Down has been designed especially for the organic farming sector. Correcting pH in a natural way is essential for plants to absorb the maximum amount of nutrients. The natural formulation of Bio·Down enables fast pH adjusting of any type of substrate and for any type of crop, without harming the soil micro life.

Bio·Down is an aqueous solution made of citric acid found naturally in different citrus fruits, such as lemons. It is designed to work perfectly with the Biobizz nutrients and can be used in every watering. It is suitable to be used during both the growing and the flowering period.

Bio·Down can be used both during the vegetative and flowering periods, in every watering, and in combination with every Biobizz substrate or liquid product.

Bio·Down doesn’t contain any strong acids. This means that this 100% organic pH regulator doesn’t harm the substrate micro life.

Expensive equipment is often utilised well below its full capabilities due to lack of proper maintenance of sensors. Here is an easy solution to storing your pH probe and extending it's life.

pH probes should always remain in Meter Store when not in use to prevent the probe from drying out. With VitaLink ESSENTIALS Meter Store, keeping pH probes in tip top condition is no longer a problem.

Includes probe foam to cut to the size of your meter cap to assist in keeping the probe wet.

Aqua Master P50 Pro pH/ Temperature meter in stock. Measure faster and more accurately with the modern and robust Aqua Master Tools pH Meter P50. The P50 has a modern and robust housing. Thanks to the latest software, measurements are even more precise. PH & TEMPERATURE The P50 is ideal for measuring the pH and temperature of liquid plant food and water in pools, jacuzzis and ponds. The user-friendly buttons can be used to switch effortlessly between parameters. This meter comes calibrated and with batteries included.   USING THE P50 Soak your pH meter in tap water for 12 hours before first use. Remove the protective cover. Carefully clean the electrode with distilled water and dry it. Press the Power button so the meter starts up. Insert the meter straight into the solution up to the rim and stir gently. Wait a few seconds until the correct value appears on the display. Press the C/F button to switch between Celsius and Fahrenheit. After use, rinse the electrode clean with water and press the Power button to turn the meter off. Store the meter upright with KCI storage solution in the protective case.

Keeping your reservoir pH balanced with RO water can be a little tricky. Due to its very low ppm, RO water is prone to dramatic fluctuations when nutrients are added, or even just from exposure to air – that’s why House & Garden – pH Osmosis Stabilizer provides the perfect blend of minerals to RO water so it stabilises pH while not causing any unwanted chemical reactions. After adding it, you can implement other nutrients without worrying about drastic changes in pH. While some growers use CalMag as a “band-aid” buffer for RO water, it only keeps the pH stable for around 2 days and often includes nitrogen, which you don’t want around during the flowering stage. pH Osmosis/Stabiliser maintains pH stability for up to 10 days, with no added nitrogen and much less potential for nutrient lockout.

pH Down 30% - Phosphoric acid 30%.

Used to lower the pH of nutrient solutions.