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Have you other co2 goods?

Yes, you need to buy a separate solution to test salinity. Only the pH solution is provided.

I'd like an answer for this too

We kindly remind you to thoroughly clean the electrode before calibration. Additionally, it's essential to use fresh calibration solutions for accurate results. Should you require further information or assistance, please don't hesitate to reach out to us at info@gainexpress.com with your order ID. Thank you!

Hi Mopar, if the item is brand new no need to calibrate, it has been pre-calibrated at the factory. for pH calibration, use the pH buffer solutions for tds/ec/salt calibrations, Just a single calibration solution will suffice to ensure your equipment is properly calibrated. Just calibrate the EC for a hassle-free calibration process.

We received your message regarding an issue and are here to help. To assist you more efficiently, could you please contact us directly at info@gainexpress.com with your order details and further information about your concern? Our team is committed to providing you with the best possible service and will do our utmost to resolve your issue promptly.

Please be informed our product Dichroscope is for Gemstones testing. If you have bought our product and have any concerns, you can email us at info@gainexpress.com. (Informamos que nosso produto Dicroscópio é para testes de pedras preciosas. Se você comprou nosso produto e tem alguma dúvida, pode nos enviar um e-mail para info@gainexpress.com.)

to Calibrate the TDS, Instead of PH solution, use conductivity buffer solution ( 1413uS, 12.88ms, or 111.8ms) ex. you have 1413uS buffer solution. 1. Change the mode into EC 2. Immerse the meter into the 1413uS buffer solution. 3. Long press MODE/CAL to enter the calibration mode. 4. Wait until 1413 flashes 3x, and that's it. the calibration is done. you may now clean the probe with distilled water and dry it.

@@GainExpress thanks!!!!

Hello! You'll be pleased to know that there's no need for separate tds/ec/salt calibrations. Just a single calibration solution will suffice to ensure your equipment is properly calibrated. Just calibrate the EC for a hassle-free calibration process.

Hi, Es ist nicht notwendig, die Elektrode während der Lagerung feucht zu halten. Spülen Sie die Elektrode einfach mit destilliertem Wasser ab und bringen Sie die Schutzkappe nach Gebrauch wieder an.

Hello! Were you looking for information on how to calibrate it? If so, you can find the calibration procedure in the operation manual. Please follow this link: cd50.net/303/, and it will direct you to the operation manual where you can find detailed instructions on calibration. If you have any more questions or need further assistance, please feel free to reach out to us at info@gainexpress.com. Thank you!

Hello, you can calibrate it with any brand of standard solution. It's quite versatile in that regard, so feel free to use whichever brand you prefer for calibration.

Hello! You'll be pleased to know that there's no need for separate tds/ec/salt calibrations. Just a single calibration solution will suffice to ensure your equipment is properly calibrated. Just calibrate the EC for a hassle-free calibration process.

Did you buy this and was it helpful ?

Hi Ben, can you email us at info@gainexpress.com together with your Order ID. Thanks

Hi alberto, for the sampling rate the lowest value you can select is 30second

Dear buyer, please contact us at info@gainexpress.com regarding your refractometer concern. Kindly send us a photo showing the inclined line scale so we can assist you in determining the possible reason/s for it. Thank you.

Thank you for your interest in our product. You can take a sample of water from the pool to measure the PH/TDS/EC/Salinity/TEMP levels. However, it's important to note that each country has its own standard level of these parameters, so please check the standard in your country. Regarding calibration, we recommend calibrating the pH every 2-3 days if the product is used frequently. Normally, there is no need to calibrate TDS/EC/Salinity. However, if you find that the readings are not accurate, then calibration may be necessary.

​@GainExpress to calibrate EC, can I use aquadest or do I need some special solution and whaf is it?

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Hi, May I know your order ID? you may send it to info@gainexpress.com to assist you further. thanks

Yes, you need another solution to calibrate the TDS

@@GainExpress thank you so much

What solution is needed to calibrate tds and ec?

@@enzeypogi you can calibrate it with any brand of standard solution. It's quite versatile in that regard, so feel free to use whichever brand you prefer for calibration. also there's no need for separate tds/ec/salt calibrations. Just a single calibration solution will suffice to ensure your equipment is properly calibrated. Just calibrate the EC for a hassle-free calibration process.

Hi bhupee, for the price, you can check it here: www.gainexpress.com/products/clmg-7173_led

Hi bhupee, for the price, you can check it here: www.gainexpress.com/products/clmg-7173_led

Hi muser, you may check the prices here: www.gainexpress.com/products/clmg-7173_led

Hi Chang, can you email us at info@gainexpress.com together with your Order ID. Thanks

Hi Automac, You can check and buy this item through this link: www.gainexpress.com/products/dmt-3