NASTEK™ Plant Stress Detection Glasses Tan Paper or permanent markers generally provide

or permanent markers generally provide the best results in wet conditions

2 litre vertical bottle

making it exceptionally durable for diving

and other field measurements

NASTEK™ Plant Stress Detection Glasses Tan Paper or permanent markers generally provideProduct Code: 23382 See plant and turf stress 2 to 10 days before it is visible to the naked eye! Utilizing technology developed by NASA scientists, the premium quality polycarbonate lens blocks out the green spectrum reflected from chlorophyll found in healthy vegetation by making it appear black or gray. Plants and turf impacted by drought, disease, or poor nutrition appear as glowing red, coral, or pink. The polycarbonate frame provides a