Growth Technology pH Buffer Solution (pH 4 & pH 7)
Growth Technology pH Buffer Solution (pH 4 & pH 7)
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Growth Technology pH Buffer Solution (pH 4 & pH 7)Growth Technology pH Buffer Solution (pH 4 & pH 7)

Description

pH 4 and pH 7 buffer solutions for calibrating your pH pen or meter. Regular calibration keeps your readings accurate, so you're not adjusting your feed based on a wrong number.

Sizes available

  • Buffer 4: 300ml or 1L
  • Buffer 7: 300ml or 1L

How to calibrate

Rinse the probe, calibrate in pH 7 first, rinse again, then calibrate in pH 4, following your meter's instructions. Use fresh solution each time and never pour used buffer back into the bottle.

FAQs

Why do I need both?
Most pH meters calibrate at two points, pH 7 and pH 4, for accurate readings across the range.

Keep your probe in probe storage solution between uses. See all Growth Technology products and meters and testers. Need advice? Call us on 0121 553 7872, WhatsApp our experts or pop in.

Explore the range

See all Growth Technology (9)

Not sure which one is right for your setup? Message us on WhatsApp or call 0121 553 7872.

Delivery, returns and FAQs

Will my order arrive in plain packaging?

Yes. Every order is sent in plain, unbranded packaging as standard.

How quickly will my order arrive?

Order standard size items by 12pm on a working day and choose Next working day at checkout, and your order will be with you the next working day. Standard delivery takes 2 to 3 working days.

Bulky items such as grow tents, large fans and 50L bags of soil go by courier in 2 to 3 working days, or on a pallet for very heavy orders. Next day is not available for these, and if your basket includes a bulky item the whole order travels with it.

UK delivery is free on orders of £94.99 or more, except for bulky items. See our delivery page for full prices.

Can I collect from the shop?

Yes. Choose Click & Collect at checkout and pick up for free from our shop at Unit 2 Black Lake, West Bromwich, B70 0PJ. Orders are ready within 1 hour.

Can I return an item?

You have 14 days from receiving your order to tell us you want to cancel, then a further 14 days to send it back. Items need to be unopened and in a resaleable condition.

If you change your mind, the return postage is paid by you. If something arrives faulty or damaged, send us photos within 48 hours and we will cover the cost of putting it right. Full details are in our refund policy.

Do you price match?

Yes. If you find the Growth Technology pH Buffer Solution (pH 4 & pH 7) cheaper at another UK retailer, use the Price Match button on this page. We usually reply within one business day.

Need help choosing?

Speak to our team. Call us on 0121 553 7872, message us on WhatsApp, or visit the shop in West Bromwich.

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