Promoted item:Bluelab pH Calibration & Cleaning Kit

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Bluelab pH Calibration & Cleaning Kit

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  • All meters can suffer from contamination and salt deposits that will reduce their accuracy.
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  • 20d 0h 58m
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  • £5.99
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  • 36 watching
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This item is being sold by eBay Top rated seller.
19d 11h 28m left
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26d 0h 32m left
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SAME DAY DISPATCH *ROYAL MAIL 1ST CLASS*
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This item is being sold by eBay Top rated seller.
PH CALIBRATION SACHETS 4.00 6.86 pH buffer sachets are ideal for calibration and to test the accuracy of pH meters. Use both 4.0 and 6.86 sachets for a more accurate (or two point) calibration.NB: Onl...
4d 6h 12m left
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1x Buffer 7 pH Calibration solution 300ml. Some pH pens have a two point calibration where buffer 7 and buffer 4 is required, please check which one you require. Or see our listing for Buffer 4 and 7 ...
26d 21h 41m left
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  • 18 watching
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250ml of buffer 7 solution used to calibrate ph meters. A twin pack of buffer 4 and 7 is also available in our shop listed on item number: 270824975304. We will always help you to have a 100% positive...
26d 0h 30m left
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1x Buffer 4 and 7 pH Calibration solution 300ml. Some pH pens have a two point calibration where buffer 4 and buffer 7 is required. This listing is for both Buffer 4 and 7 together.... better value......
17d 0h 28m left
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  • 15 watching
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  • 173 sold
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1x Buffer 4 pH Calibration solution 300ml. Some pH pens have a two point calibration where buffer 4 and buffer 7 is required so please check which solution you require. Calibration solutions.
19d 11h 30m left
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This solution is of a known and fixed pH. This is used to calibrate pH meters. This should be done on a regular basis to ensure ongoing accuracy from the meter.
14d 3h 56m left
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Sizes available: , 250ml, 1L. Essentials buffers use two values of 4 and 7pH to calibrate your pH testers as they are at the outer reaches of the range of pH where you work in hydroponics i.e.
23d 3h 41m left
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  • 40 watching
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  • 167 sold
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Essentials buffers use two values of 4 and 7pH to calibrate your pH testers as they are at the outer reaches of the range of pH where you work in hydroponics i.e. 5.5-6.5.
22d 5h 24m left
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  • 8 watching
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  • 49 sold
This item is being sold by eBay Top rated seller.
Solutions of a known and fixed pH. These are used to calibrate pH meters. This should be done on a regular basis to ensure ongoing accuracy from the meter. All orders come with track and trace for you...
24d 4h 12m left
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Use the Buffer Sachet to calibrate your pH Meter. Dip meter into liquid if pH 4 is not shown on meter then you will need to calibrate the meter as per the instructions provided with the meter.
29d 11h 13m left
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27d 22h 37m left
£7.59
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This item is being sold by eBay Top rated seller.
Sizes available: , 250ml, 1L. Essentials buffers use two values of 4 and 7pH to calibrate your pH testers as they are at the outer reaches of the range of pH where you work in hydroponics i.e.
23d 3h 46m left
£5.40
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  • 9 watching
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  • 33 sold
This item is being sold by eBay Top rated seller.
13d 13h 11m left
£11.54
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This item is being sold by eBay Top rated seller.
This solution is of a known and fixed pH. This is used to calibrate pH meters. This should be done on a regular basis to ensure ongoing accuracy from the meter.
16d 2h 34m left
£4.95
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  • 8 watching
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  • 65 sold
Single use buffer 4 7 calibration fluid to ensure you PH meter is reading correctly, we do have the 250ml size bottles listed in our eBay shop. 250ML Buffer Pack. This is the content for tab four.
26d 0h 29m left
£1.95
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  • 3 watching
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Single use buffer 7 calibration fluid to ensure you PH meter is reading correctly, we do have the 250ml size bottles listed in our eBay shop. We will always help you to have a 100% positive happy buyi...
13d 19h 5m left
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1 litre combo pack.
29d 14h 20m left
£10.99
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This item is being sold by eBay Top rated seller.
You are purchasing a high quality handheld pH test meter, complete with hard carry case, instructions, calibration solutions, and calibration screw. Suitable for use with Aquarium / Pond, Pool / Spa, ...
27d 4h 2m left
£9.99
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250ml of buffer 4 solution used to calibrate ph meters. A twin pack of buffer 4 and 7 are also available in our shop listed on item number: 270824975304. This is the content for tab four.
22d 11h 9m left
£2.45
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  • 5 watching
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From China
22h 42m left
£0.99
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1x Buffer 4 pH Calibration solution 300ml. Some pH pens have a two point calibration where buffer 7 and buffer 4 is required, please check which one you require. Or see our listing for Buffer 4 and 7 ...
27d 21h 16m left
£4.94
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No contamination of the calibration fluid as these are single use sachets. Single pH value sachets can be found in our ebay shop. Quality single use sachets of calibration fluids.
17d 0h 38m left
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This item is being sold by eBay Top rated seller.
Essentials ph buffer 7 250ml, "PH" 7 solution used to calibrate ph test meter use in conjunction with PH buffer 4. Welcome to Homegrown Hydroponics. Paypal only from outside the uk.
23d 4h 50m left
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PH BUFFER POWDER for Calibration of PH Meter. Ph 6.86. Ph 4.00. This is a powder, in a sealed packet there is no "shelf life". Just add water or distilled water. Double your traffic.
12d 22h 45m left
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From United States
20ml single-use Bluelab Solution Sachets, 2 each of: pH 7.0 pH 4.0, KCl, 2.77 EC. Bluelab pH Probe Cleaner. Bluelab Conductivity Probe Cleaner. Bluelab Toothbrush (pH probe cleaning instrument)
14h 34m left
£14.84
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250ml of buffer 7 solution and 250ml of buffer 4 solution used to calibrate ph meters.
28d 3h 21m left
£4.99
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No contamination of the calibration fluid as these are single use sachets. Single pH value sachets can be found in our ebay shop. Quality single use sachets of calibration fluids.
20d 3h 35m left
£2.99
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+ £1.49 P&P