[delta66]

Αρχική Δημοσίευση από Vangelis21

ωραια, οποτε τα τεστ αμμωνιας ειναι 2 ετων και εχουν ακομα ενα ετος οπως καταλαβα

τα αλλα τα μετραω αναγκαστικα με στικακια της τετρα

Για το πρωτο τεστ (αν το κανεις οπως εγραψα πιο πανω) εχω μια εμπιστοσυνη 95% για την ακριβεια στη μετρηση που δειχνει.

Για το δευτερο τεστ ενα 50%, αν ειναι φρεσκοανοιγμενο και δεν εχει παρει για πολυ καιρο αερα κλπ. (και φυσικα γινεται συμφωνα με τις οδηγιες του).

Aυτα νομιζω πρεπει να εχεις
http://theaquariumwiki.com/Tetra_Test_6in1

Usage
You simply dip the stick into the water and swirl it about for 5 seconds, remove and shake off excess water and wait for approximately 60 seconds and compare colours on stick to side of tube.

Date Stamp
This items uses chemicals and has a finite shelf life. The metal tube when bought in 2008-08-29 had a sealed date stamp of 2010-06 which is almost 2 years.
Once the seal on the tube is broken the strips will remain effective for 5–6 months if the strips are kept in the tube at room temperature and away from direct sunlight. Less if kept at around 25-30°C (77-86°F)

Useful points
-The test strip has 3 protective bands between the groups of pads to prevent water drips from one pad contaminating the lower ones as you remove it from the water. So best to give the strip a flip of the wrist to quickly remove excess water.
-Keep the strips in the tube with the top on and away from the sun and they'll last longer. While these Nessler type kits are not super-accurate, they will lose their effectiveness over time and you don't want a seemingly good reading of 25 mg/l of nitrate to be in reality 100+mg/l!
-You'll be better able to judge the colour on the pads if you let sunlight fall on the readings. Indoor lighting may make it harder to read subtle differences
-Look for indications that the stick is past its usable state: The NO3 or NO2 squares turn yellow when dipped into water. These read false low levels of nitrate or nitrite when old. You can't trust them. See above for lifetime period once opened.