Testing With Plain No-Dimitri PG/VG
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For any new tank, I strongly suggest initial testing with no-dimitri PG/VG mix with around 60PG/40VG. Exact proportion isn't critical, but be aware that premixed 0% nicotine vape juice often has a much higher VG content than we'd want (70% is common). This is thicker at room temp & also has a significantly higher boiling point (see graph), making it feel even less like real Dimitri juice.
Also, note that plain PG/VG will feel totally different to vape than Dimitri juice, so scope for vapour acclimatisation, Wattage selection, evaluating vapour temperatures, etc will be very limited at best. These can only be properly evaluated when the tank is filled with your chosen Djuice.
For the plain PG/VG testing, here are a few things I'll investinvestigate (typically over a few days) ...
For more info on PG/VG boiling points, see this report
Practising wicking, spotting any potential limitation issues with coil width, diameter, mounting height, etc
Evaluating how the airflow changes with different AFC ring positions (see graph below), and getting an idea of where the green working adjustment range lies for your particular tank and toke rate. The green zone is ime the best for light restriction, without getting into the part where airflow rate can drop drastically with the slightest shift in AFC ring position
Checking for any leaks, what causes them, where they come from, how to avoid and testing avoidance ideas
Look out for any obvious gotchas, for example can you adjust airflow ring without accidentally loosening the cap or partially unscrewing the tank from the mod, etc Just check that all is OK to perform without unexpected mishaps - or at least be aware of them.
Evaluate the juice capacity (which won't necessarily match the manufacturer's specs), we'll know much Djuice to mix (juice diagrams are shown for all tanks reviewed on this site
Become familiar with general vaping from the tank, and if you're new to vaping in general, get familiar with the entire process so that it becomes second nature.
For the range of toke rates we typically use for Djuice with DTL tanks, almost all airflow adjustment typically occurs in the final quarter of AFC ring gap, but it will vary per tank and toke rate. Try out different toke rates (no actual need to press the fire button) with different airflow ring settings get an idea of where the green zone lies in relation to your ring positions. With Dimitri juice, descending too far into the orange/red (especially with higher Wattages) increases the chances of less euphoric, or even unpleasant trip ambiences, so try and stay in the green zone for maximum control and clean effects
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