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10 

 

14  Accessories 

•  pH buffer Kit (pH4/7, 250ml, each), item AI1113 
•  pH buffer Kit (pH4/7/10, 250ml, each), item AI1115 
•  3M KCl storage solution 250ml, item Al1107 
•  GS1-E pH Probe, item Al58010 
•  GS2-E Soil pH Probe, item Al58020 

 

 

15 

Warranty 

How Long Does the Coverage Last? 

Apera Instruments® (Apera) warrants the GroStar™ GS4 Premium pH/EC Combo Pen 

Tester (Product) for a period of 24 months for the instrument and 12 months for the probe 

from date of purchase by original purchaser or consumer. Proof of purchase is required for 

the warranty to be effective (store sales receipt for Product showing model number, payment, 

and date of purchase). This warranty is non-transferable and terminates if the original 

purchaser/consumer sells or transfers the Product a third party. 

  

 

What is Covered? 

Apera warrants the Product against defects in material and workmanship when used in a 

normal manner, in accordance with Apera instruction manuals. If Apera is provided with valid 

proof of purchase (as defined above) and determines the Product is defective, Apera may, in 

its sole discretion either (a) repair the Product with new or refurbished parts, or (b) replace 

the Product with a new or refurbished Product. 

 

What is NOT Covered? 

This warranty does not apply to equipment, component or part that was not manufactured or 

sold by Apera and shall be void if any such item is installed on a Product. Further, this 

warranty does not apply to replacement of items subject to normal use, wear and tear and 

expressly excludes: 

•  Cosmetic damage such as stains, scratches, and dents 
•  Damage due to accident, improper use, negligence, careless operation or handling of 

Product not in accordance with Apera instruction manuals, or failure to maintain or care 

for Product as recommended by Apera 

•  Damage caused by use of parts not assembled/installed as per Apera instructions 

 

•Damage caused by use of parts or accessories not produced or recommended by Apera 

•  Damage due to transportation or shipment of Product 
•  Product repaired or altered by parties other than Apera or its authorized agents 
•  Product with defaced, missing, or illegible serial numbers 

Содержание 28APE190349/AI11010

Страница 1: ...GroStar GS1 Premium pH Pen Tester User Manual APERA INSTRUMENTS Europe GmbH www aperainst de...

Страница 2: ...rket Since 1991 Apera instruments has been dedicated to providing hi tech accurate lab grade instruments and sensors GroStar s intelligent design reduces the guesswork so you can easily manage your cr...

Страница 3: ...s the level to which you should pour the soaking solution or sample solution For details of probe storage see Section 7 Premium pH Probe Built with low resistance lithium glass membrane with double ju...

Страница 4: ...e in 3M KCL soaking solution for 5 minutes before use 2 5 If the tester hasn t been used for a long time over 1 month please soak the probe in the 3M KCL soaking solution for at least 1 hour then cali...

Страница 5: ...up to the right of Calibrating pH 10 is usually not necessary unless your estimated target pH is greater than 8 0 pH 3 5 will disappear in 30 days after calibration reminding you to recalibrate the te...

Страница 6: ...1 If necessary you can manually hold lock the reading by short pressing Press it again to cancel the hold 5 2 Long press to switch temp unit between F and C 5 3 The tester will automatically power off...

Страница 7: ...store the probe in it Close the probe cap tightly with the O ring If you find white crystals inside or outside the probe cap it is perfectly normal It is the 3M KCL soaking solution that crystalizes...

Страница 8: ...as it will cause greater measurement error and damage to the probe Test your samples and perform calibration close to room temperature as much as possible 10 4 Never test oily liquids 10 5 Make sure...

Страница 9: ...ully immersed in the solution at least 1 inch deep Air bubbles around the sensor Make a quick stir in the solution to remove air bubbles Probe is not properly connected or the pin connector is broken...

Страница 10: ...alkaline batteries Backlight White measurement Green calibration Red errors Reading hold Manual Warranty Two years for the instrument one year for the probe pH probe Low resistance lithium glass membr...

Страница 11: ...proof of purchase as defined above and determines the Product is defective Apera may in its sole discretion either a repair the Product with new or refurbished parts or b replace the Product with a n...

Страница 12: ...D HAS NOT MADE ANY EXPRESS OR IMPLIED WARRANTY OR OTHER REPRESENTATION REGARDING THE PRODUCT AND DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TO THE EXTENT PERMITTED B...

Страница 13: ...12 APERA INSTRUMENTS Europe GmbH Wilhelm Muthmann Stra e 18 42329 Wuppertal Germany Contact info aperainst de Website www aperainst de Tel 49 202 51988998...

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