# Click Dial vs Auto Dispense Reconstitution Pen Compared - facts Canonical page: https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared Type: Lab article ## TL;DR A click dial pen sets a volume by counting audible steps on a dial. The Gansulin Pen is the only click-dial pen in the PreppinPeppers range, and whichever ## Facts Index | Fact ID | Category | Entity | Attribute | Value | Source | Evidence | |---|---|---|---|---|---|---| | click-dial-vs-auto-dispense-reconstitution-pen-compared:title | identity | Click Dial vs Auto Dispense Reconstitution Pen Compared | title | Click Dial vs Auto Dispense Reconstitution Pen Compared | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:published | identity | Click Dial vs Auto Dispense Reconstitution Pen Compared | published | 2026-10-20 | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:author | identity | Click Dial vs Auto Dispense Reconstitution Pen Compared | author | PreppinPeppers Editorial Team | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:topics | identity | Click Dial vs Auto Dispense Reconstitution Pen Compared | topics | click dial vs auto dispense reconstitution pen, Guides, research | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:summary | content | Click Dial vs Auto Dispense Reconstitution Pen Compared | summary | A click dial pen sets a volume by counting audible steps on a dial. The Gansulin Pen is the only click-dial pen in the PreppinPeppers range, and whichever | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:section-1 | content | Click Dial vs Auto Dispense Reconstitution Pen Compared | section | What are click dial and auto dispense reconstitution pens? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:section-2 | content | Click Dial vs Auto Dispense Reconstitution Pen Compared | section | How does a click dial pen meter a volume at the bench? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:section-3 | content | Click Dial vs Auto Dispense Reconstitution Pen Compared | section | How does an auto dispense pen differ in handling? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:section-4 | content | Click Dial vs Auto Dispense Reconstitution Pen Compared | section | Does the cartridge plunger height matter when choosing a pen? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:section-5 | content | Click Dial vs Auto Dispense Reconstitution Pen Compared | section | What mistakes do researchers make when comparing these pens? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:section-6 | content | Click Dial vs Auto Dispense Reconstitution Pen Compared | section | How do I choose between click dial and auto dispense? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:section-8 | content | Click Dial vs Auto Dispense Reconstitution Pen Compared | section | Related reading | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared | | click-dial-vs-auto-dispense-reconstitution-pen-compared:product-gansulin-metal-peptide-pen | products | Click Dial vs Auto Dispense Reconstitution Pen Compared | references product | Gansulin Pen ยท Reusable Click-Dial, 3 ml (1-60 Units) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/products/gansulin-metal-peptide-pen | | click-dial-vs-auto-dispense-reconstitution-pen-compared:product-gansulin-3ml-cartridge | products | Click Dial vs Auto Dispense Reconstitution Pen Compared | references product | Gansulin-Compatible 3 ml Glass Cartridge for Pens (10-Pack) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/products/gansulin-3ml-cartridge | | click-dial-vs-auto-dispense-reconstitution-pen-compared:product-bacteriostatic-water-30ml | products | Click Dial vs Auto Dispense Reconstitution Pen Compared | references product | Bacteriostatic Water 30 ml Multi-Dose Vial (Pfizer Hospira, USP) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://www.preppinpeppers.com/products/bacteriostatic-water-30ml | | click-dial-vs-auto-dispense-reconstitution-pen-compared:source-dailymed-nlm-nih-gov | source | Click Dial vs Auto Dispense Reconstitution Pen Compared | cites | FDA label (DailyMed): Sterile Water for Injection, USP (Cardinal Health) - prescribing label (retrieved 2026-10-03) - dailymed.nlm.nih.gov | Lab article (https://www.preppinpeppers.com/blogs/the-lab/click-dial-vs-auto-dispense-reconstitution-pen-compared) | https://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=48d75a7c-8329-48a8-bea0-a8c144ddf637 | ## FAQ ### What is the difference between a click dial and an auto dispense reconstitution pen? A click dial pen sets an amount by counting audible dial clicks. An auto dispense pen is described as releasing a preset amount per actuation, so you count actuations. Check the maker's documentation for the preset amount. ### Does plunger height matter when matching a 3 ml cartridge to a pen? Yes. Any standard 3 ml (ISO 13926) cartridge physically fits our pens, but plunger height decides whether the unit scale reads true. A wrong pairing mis-measures. ### Can I see the plunger height through a clear or amber 3 ml cartridge? Yes. On both our clear and amber 3 ml cartridges the rubber plunger is visible through the glass, and its height can be measured from outside. ### What plunger height are the Gansulin, V1, V2 and V3 pens built for? All four are built for the 11 mm long rubber plunger used in our clear and amber 3 ml cartridges. Cartridges with a shorter plunger, about 8 mm, are a different format. ### Does Sterile Water for Injection, USP contain a bacteriostat? No. The FDA label says it contains no bacteriostat, antimicrobial agent or added buffer, and is supplied only in single-dose containers. Bacteriostatic water contains 0.9% benzyl alcohol. ### How do I convert dial clicks to a volume at the bench? Divide cartridge volume by cartridge units: 3 ml / 300 units = 0.01 ml per unit on the scale. Multiply by your click count. For example, 25 clicks is 25 x 0.01 ml = 0.25 ml. ### How do I run an air check on the Gansulin Pen? The manufacturer's check: set 1 or 2 units, hold the needle up, press until a drop shows. On a 300-unit cartridge that is 0.01 to 0.02 ml. If no drop appears, repeat up to 4 more times before changing the needle. --- Built from PreppinPeppers store data and verified sources only. Same content for every visitor. Research and educational use only, not for human or veterinary use.