By combining pre-stabilized 3.0 mL cartridges with a mechanical 60-click rotary actuator, Busch pens eliminate manual solvent mixing and dead-volume loss.
Select your Retatrutide 3mL Pen strength (10mg, 20mg, or 30mg) and desired research aliquot to calculate exact rotary dial clicks (1 click = 0.05 mL = 1/60th of 3.0 mL cartridge).
Calibrated U-100 Scale Units
6 Clicks(30.0 IU / 0.30 mL)
Turn the rotary pen dial to this exact click count (or draw the equivalent U-100 graduation units for in vitro laboratory assay).
Reconstituted Concentration
6.67 mg/mL (333 mcg/click)
Draw Volume (mL)
0.300 mL (6 Clicks)
Quick Reference Chart: How Many Clicks = How Many mg?
Retatrutide 60-Click Pen Calibration Table (3.0 mL Total Fill / 0.05 mL per Click)
1 Full Pen = 60 Clicks (3.0 mL)
Rotary Dial Clicks
Dispensed Volume
Retatrutide 10mg Pen (167 mcg / click)
Retatrutide 20mg Pen (333 mcg / click) ★
Retatrutide 30mg Pen (500 mcg / click)
3 Clicks
0.15 mL (15 IU)
0.50 mg (500 mcg)
1.00 mg (1,000 mcg)
1.50 mg (1,500 mcg)
6 Clicks
0.30 mL (30 IU)
1.00 mg (1,000 mcg)
2.00 mg (2,000 mcg)
3.00 mg (3,000 mcg)
12 Clicks
0.60 mL (60 IU)
2.00 mg (2,000 mcg)
4.00 mg (4,000 mcg)
6.00 mg (6,000 mcg)
15 Clicks
0.75 mL (75 IU)
2.50 mg (2,500 mcg)
5.00 mg (5,000 mcg)
7.50 mg (7,500 mcg)
24 Clicks
1.20 mL (120 IU)
4.00 mg (4,000 mcg)
8.00 mg (8,000 mcg)
12.00 mg (12,000 mcg)
30 Clicks (Half Pen)
1.50 mL (150 IU)
5.00 mg (5,000 mcg)
10.00 mg (10,000 mcg)
15.00 mg (15,000 mcg)
60 Clicks (Full Pen)
3.00 mL (300 IU)
10.00 mg Total
20.00 mg Total
30.00 mg Total
Janoshik Batch Proof & Verified European Reviews
Rated 4.9 / 5 Across 184 Verified European Research Orders
"Zero mixing, exact 60-click dial, arrived in Munich in 48h"
"Ordered the 3-Pen Starter Bundle (3x 10mg) via SEPA Instant. Cold-pack was still cool on arrival, 32G tips included, and Batch BR-2026-1038 matched the 99.35% HPLC chromatogram."
Dr. M. Lindner · Munich, Germany · Retatrutide 3-Pen Bundle
★★★★★ · VERIFIED ORDER (NL)
"20mg Pen (333 mcg/click) is the cleanest format in Europe"
"No more reconstituting lyophilized vials or calculating syringe units. 6 clicks on the 20mg pen is an exact 2.0 mg aliquot every time. Paid with iDEAL, delivered next day in Utrecht."
S. Van Der Berg · Utrecht, Netherlands · Retatrutide 20mg Pen
★★★★★ · VERIFIED ORDER (FR)
"30mg High-Concentration Pen + free BAC water at EUR 150+"
"500 mcg per click on the 30mg pen makes high-concentration protocols effortless. Zero customs checks into France because it dispatches directly from their Schengen facility."
L. Moreau · Lyon, France · Retatrutide 30mg Pen
★★★★★ · VERIFIED ORDER (PL)
"True pharma-grade pen hardware & +3.9% overfill"
"We cross-checked Batch BR-2026-1046 on RP-HPLC and confirmed 20.78 mg net fill (+3.9% overfill) and 99.42% purity. Instant BLIK checkout worked smoothly."
How do I verify the RP-HPLC and ESI-MS Certificate of Analysis for my Retatrutide Pen?
Every pre-filled 3mL Retatrutide pen carries a unique batch lot ID (BR-2026-1038 for 10mg, BR-2026-1046 for 20mg, and BR-2026-1047 for 30mg). Enter your batch ID on our COA Verification Portal to inspect the exact RP-HPLC retention time, purity percentage, actual net overfill mass, ESI-MS molecular mass, and < 0.02 EU/mg endotoxin result.
How does the calibrated 60-click Retatrutide Pen mechanism work?
Each 3mL Type-I borosilicate pen is pre-stabilized and ready for immediate in vitro laboratory assay with zero manual reconstitution. The precision 60-click rotary dial dispenses 0.05 mL per click: 167 mcg/click on the 10mg pen, 333 mcg/click on the 20mg pen, and 500 mcg/click on the 30mg pen.
Who is the legal operator of this storefront?
This storefront is operated by Busch Pharma Limited (Company No. 11979208, registered in England and Wales, First Floor 690 Great West Road, Osterley Village, Isleworth, England, TW7 4PU). All compounds are supplied strictly as In Vitro laboratory research reagents.
Analytical & Batch Support Desk
Ask about batch HPLC/MS COAs (BR-2026-1001..1045), reconstitution molarity, or Schengen cold-pack dispatch. Note: Clinical/human-dosing queries are strictly refused under RUO compliance.
Busch Peptides
European Cold-Chain Pen Storefront · 21+ RUO Gate
Welcome to Busch Peptides
Select your European delivery country and preferred language below.
Mandatory 21+ Research-Use-Only Attestation
All Retatrutide 60-click pens and reference standards supplied by Busch Pharma Limited (Company No. 11979208) are strictly for In Vitro laboratory research and analytical assay use only. Not for human or veterinary administration. By clicking Agree & Enter Store, you confirm you are 21+ and a qualified researcher.
