(CLEARING OVERSTOCK, ORDERED TOO MANY BY MISTAKE)
HI70004P is a premium quality pH 4.01 calibration buffer solution. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna’s line of calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. The HI70004P is for 25 sachets containing 20 mL of buffer. HI70004P is a quality pH 4.01 calibration buffer produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers. Reported values are accurate to +/- 0.01 pH @ 25°C and are traceable to NIST Standard Reference Materials (SRMs).
Convenience of individual packaging
Ideal for users that do not calibrate frequently
Ideal for field use due to portability
Every sachet is as fresh as the day it was packaged
Light block packaging prevents oxidation from UV light that could alter the buffer value
Each sachet marked with lot number and expiration date.
- Hanna buffers are specially formulated to have an expiration of 5 years from manufacture for an unopened sachet.
Color coded label for easy pH buffer value identification
Easy to identify different buffer values
Solution does not contain any dyes that may stain the reference cell of a pH electrode
Accuracy: Standard ±0.01 pH
pH Value @25°C: 4.01
Size: 20 mL per pack
Packs Included: 25
VIP Customer Reviews
Community Product Reviews
There are tons of online stores out there, Why are we Different?
- Free 2 Day Shipping - Free 2 Day Shipping on Products $35+ from select manufactures.
- Free Shipping on EVERYTHING - No Minimum Purchase, Everything we sell ships Free at no cost to you. Red Sea Aquariums, Salt, Sand, Chillers, Everything.
- Free Stuff - We offer tons of Free Samples, Shirts, Stickers and plenty more just for giving us your business!
- Up to 5% Future Rewards for EVERYONE - There are no Preferred Clubs or Groups to Join.
- Free Returns - Returns of any Items (Both Brand New and USED) within 30 days are Always FREE! We personally strive to never have any returns.
- Apple Pay - You can checkout with Apple Pay, submit your order with your thumbprint and we will never see your payment information. Awesome!
- Military & Civil Service Discount - As a small token of our appreciation, we offer a Military & Civil Servant discount. A Bonus 5% Reward Points on 90% of what we carry. SaltwaterAquarium.com deeply appreciates all military men and women & first responders for their service.
- Automatic Price Matching - Just click the Price Match button under Add to Cart. No need to email your price match.
- Text Message 717.408.8337 Support - No one uses the phone anymore, just text us 717.408.8337. We will do our best to help!
- Live Chat - We offer LIVE WEB CHAT Mon-Fri 9am to 4pm EST. Get instant access to our customer support & your questions answered.
- Credit Card Security - We do not keep any Credit Card Numbers on File. Our checkout page is plugged directly into paypal credit services so we don't even know your card number when you order.
- Website Security HTTPS - Our entire site is HTTPS Secure, not just the checkout page. Your entire browsing session is encrypted and secure. We have an ESV level SSL Certificate which includes business identity authentication, strong 256-bit encryption, 2048-bit root, $1.5M USD warranty & a GeoTrust dynamic Secured Seal trust mark.
Have questions? Just ask - firstname.lastname@example.org or Text Message us at 717.408.8337