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FREE Delivery on orders over £65
Plain Packaging Used For All Deliveries 
Free Delivery - orders +£65
Plain Packaging Used
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Description
GROWTH TECHNOLOGY PH BUFFER 4 & 7
The Growth Technology pH buffer solutions are each of a known and fixed pH - 4 and 7 respectively. These can be used to check and calibrate your pH meter, and should be done regularly to ensure accuracy from your pH meter.
Simply pour out a small amount to calibrate, and discard the used solution afterwards to avoid any contamination.
pH buffer 7 will calibrate your meter to neutral. It is recommended to also use pH buffer 4 to calibrate your meter so you have a two point calibration, rather than just calibrating to one level. This just gives more reliability.
Incorrect acidity/alkali levels can damage your plants and stop them from feeding as they should be.
Delivery & Returns
Free Delivery
We are pleased to offer free standard shipping to UK Mainland on all orders over £65.00 *Heavy item surcharges are still applicable.
Next Day Delivery
In a hurry for your order? Order before 1 pm Mon - Thurs for next working day delivery *subject to stock availability T&C's apply.
Different delivery address?
Do your goods need shipping to an alternative address? If so, paying by bank transfer gives you the freedom to have them delivered to anywhere in the UK.
Free Returns
Faulty or damaged item? No problem, contact us on 0800 038 7100 or email customer service and we can arrange a free collection.
Plain Packaging
All parcels, no matter how big or small, are dispatched in plain packaging using black wrap that's secured using 'fragile' tape.
How to Pay
Credit / Debit Cards
We accept all major credit and debit cards. Please note: When paying by credit card we can only ship to the card statement address.
Paypal
Simply select this option at checkout if you prefer to pay through PayPal. Please note: When paying by PayPal, we can only ship items to the account owners confirmed address.
Bank Transfer
Select the option for Bank Transfer at checkout if you wish to receive your item anywhere within the UK. Please use your order number as payment reference.
Klarna
Split your purchase into manageable payments. Buy now and pay in 30 days or in three interest-free instalments with Klarna.
Click & Collect
Collect your online orders in as little as under an hour*! Simply pay online, choose your store & collect for free! Available from Manchester & Huddersfield (*subject to stock availability).
FAQs