20% Ferric Sulfate

ViscoStat hemostatic is a 20% ferric sulfate equivalent solution with inert binding agents in a viscous, aqueous vehicle. It has a pH of ~1.0 and contains patented, fumed silica to limit the acidic activity, making it kind to hard and soft tissue.

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Technical Details

Provides Profound Hemostasis in Seconds

The faster hemostasis can be achieved, the faster you can perform quality dentistry for the patient. For most cases, ViscoStat hemostatic solution provides profound hemostasis in just a matter of seconds.

Kind to Hard and Soft Tissues

With a pH of approximately 1, ViscoStat hemostatic solution is one of the kindest hemostatics to be placed against mineralized tooth structure. ViscoStat hemostatic is formulated with patented binding and coating agents to protect tissue while achieving profound hemostasis and sulcular fluid control in seconds.

Viscous Consistency

ViscoStat hemostatic solution is formulated with a patented fumed silica to buffer acidity and offer a more viscous consistency that will not run or drip. This makes precise placement of ViscoStat hemostatic easy, regardless of the location in the mouth.

Decreases Costly Impression Remakes

Quality tissue management is essential to accurate impressions. When impressions are made with fluid present in the sulcus, the quality of the impression suffers and the impression often needs to be remade. Because ViscoStat hemostatic eliminates bleeding and sulcular fluid, it creates the optimal environment for perfect impressions.


Tissue Management Is the Key to Quality Direct and Indirect Restorations


ViscoStat hemostatic's viscous, non-drip formula achieves hemostasis efficiently. The Metal Dento-Infusor™ tip infuses the hemostatic agent into capillaries, forming a cork-like "plug," then wipes coagulum away.


Thoroughly rinsing ViscoStat hemostatic is an important step in testing hemostasis while also creating a field for optimal bonding with no compromise in bond strength.

Hemostasis and Fluid Control


ViscoStat hemostatic and Ultrapak cord are ideal for controlling fluids (blood and sulcular). Use a firm air/water spray to remove excess hemostatic solution.


Successful bonded restoration, two weeks post-op.

Easy to Dispense with the IndiSpense Syringe


Protects Tissues and Leaves Smear Layer Intact



Tissue Management Technique Step by Step

See Instructions for Use for complete instructions, warnings, and precautions.

Step 1

With the Dento-Infusor™ tip, scrub hemostatic firmly against cut bleeding tissues until bleeding stops.

Step 2

Give firm air/water spray to remove residual coagulum and to test for profound hemostasis. If bleeding continues, repeat.

Step 3

After complete hemostasis has been attained, excellent retraction is achieved using Ultrapak™ knitted cord placed with the Ultrapak™ packer


"I can't live without ViscoStat because it takes seconds to save an hour and stops the bleeding when nothing else will. Now I don't have to re-prep for impressions."

Dr. Jeffrey Stratford-Jones – Ventura, CA

"[ViscoStat] is convenient, dependable, and effective in bothersome clinical bleeding situations. It is the product of choice when others fail to do the job."

Dr. Daniel Sweet – Colvis, CA

​"ViscoStat has allowed me to take clean, dry, accurate impressions even in some of the most hemorrhagic situations. Thank you! I appreciate it, my lab man appreciates it, and my patients appreciate it."

Dr. Monte Person – Fresno, CA

"​ViscoStat can stop bleeding on the cervical area of a crown prep like nothing else I have ever seen! It is a miracle solution! I wish I knew how many thousands of hours it has saved me over the years. Thank you, Ultradent!"

Dr. Scott J. Hadley – Haxtun, CO

​"Controlling bleeding is almost an everyday procedure. To improve fine impressions of crown margins I rely on ViscoStat to control bleeding, leaving a dry open field for impression material."

Dr. Bertram Chodorov – Melbourne, FL

"Without a doubt I would be lost without ViscoStat! It quickly stops sulcular bleeding, allowing me to place the Ultrapak cord and get an excellent impression on the first try. It is also great to use when bonding composites near gingival tissues. ViscoStat is a vital part of my crown prep and composite armamentarium."

Dr. Julie Ann Routhier – Savannah, GA

​"I use ViscoStat in my practice on an almost daily basisin fact, it's a product that is a MUST HAVE for me! It's absolutely vital when seating crowns. After removing the temporary crowns and doing try-in of the definitive crowns I always use ViscoStat to control the gum tissue hemorrhage. It works absolutely AMAZING and provides a clean, dry field for me to deliver the crowns without compromising the marginal integrity as the cement cures!"

Dr. Todd W. Hohlen – Lincoln, NE

Frequently Asked Questions

  • Is ViscoStat hemostatic solution more powerful than Astringedent™ hemostatic solution?

    Yes. ViscoStat hemostatic is a 20% ferric sulfate solution, and Astringedent hemostatic is a 15.5% ferric sulfate solution.

  • Can ViscoStat hemostatic be used with an epinephrine preparation?

    No. When a ferric sulfate solution like ViscoStat hemostatic is used with an epinephrine preparation, a blue/black precipitate will occur.

  • How do I know that I’ve achieved hemostasis with ViscoStat hemostatic solution?

    Hemostasis is realized when the new coagulum stops forming. By burnishing the gingival margin with the Metal Dento-Infusor tip, ViscoStat hemostatic is delivered to the capillary openings, stopping the bleeding. After ViscoStat hemostatic has been delivered to the preparation and rubbed into the sulcus, test the preparation with a firm air/water spray. If bleeding resumes, rub additional ViscoStat hemostatic into the preparation and test again. When no bleeding occurs after a firm air/water spray, profound hemostasis has been achieved.

  • How fast is hemostasis achieved with ViscoStat hemostatic solution?

    ViscoStat hemostatic solution is capable of providing hemostasis in a matter of seconds. Depending on the patient’s periodontal and systemic health, hemostasis may be achieved in as little as 2–3 passes around the sulcus or as many as 20 or 30.