I think it is important to understand that all three examples you gave can vary greatly. Honey for instance, can be very thin or almost a solid depending on the brand and how it is processed. For example most pourable honey is going to be somewhere in the broad range of 3000cps to 25000cps.
The viscosity of catsup varies greatly by brand but most are between 20,000 and 30,000 cps.
Sour cream varies by brand and whether it is non fat, low fat, etc., but again, I have never seen sour cream that is only 100cps as that would be thinner than vegetable oil.
Water at room temperature is approximately 1cps, skim milk is about 3.5 cps, whole milk is about 3.8cps, typical vegetable oil is around 60cps, 10w40 oil is about 190cps, and 20w50 oil is about 330cps.
So back to windshield repair resins. A low viscosity injectable resin (thin) is typically described as being between 5cps and 30cps. Medium viscosity resins are typically described as 40cps to 100cps. High viscosity resins are typically described as 100cps to 500cps. However, even a 500cps resin is relatively low viscosity, but not when it comes to a product that is typically used as an injection resin for windshield repair. Although it was recently mentioned by a technician on the windshield repair forum that Delta Kits Premium Plate Glass Resin (3600cps) was used for injection, that is not a common practice, or one that is recommended by Delta Kits.
A medium viscosity non-injectable windshield repair resin is commonly categorized in the 500cps to 2500cps range. Pit resins often fall into this category.
A high viscosity non-injectable windshield repair resin is commonly categorized in the 2500cps to 5000cps range. Plate glass resins often fall into this category.
Delta Kits sells injectable windshield repair resins in viscosities as low as 15cps, but also have 20cps 40cps, and 60cps, and custom blends of even higher viscosities of injectable resins available up to 500cps. However when using Delta Kits equipment we "recommend" using Magnibond 20cps for all repairs.
Delta Kits Premium Pit Resin is about 2000cps.
Delta Kits Premium Plate Glass Resin is about 3600cps.
Please note that there are different ways of measuring viscosity and many variables to consider, so in most cases a liquid product will have a "viscosity range", but for simplicity I am listing approximate average viscosities at room temperature for the products above. If you do a search in Google you will find a wide variety of results. For instance, if you search for "what is the viscosity of honey", you will probably be more confused than ever as no one seems to agree. That is partially because of the variables, but also because the Internet is full of non-factual information. The site I use most whenever this subject comes up is
http://www.brookfieldengineering.com/ed ... cosity.asp. The Brookfield index well respected and they explain their testing and results better than most.
I am not an expert on this subject, but I have consulted experts and feel I have a reasonably good working knowledge of it. What is important for windshield repair technicians is that the resin they use is matched to the equipment they use and that it does what it is supposed to do. Although Delta Kits "thin" resins are considerably thicker than water, most technicians refer to it as water thin and very few of us can tell the difference between a 10cps resin and a 20cps resin if it were to be tested in unmarked bottles.